It would be interesting to see a post on how Scotism can accomodate the message of a well-known private revelation which was even quoted by JP_II in his catechesis of August 7, 1985.
In his Life of Catherine of Siena, Bl Raymond of Capua records what St Catherine (1347-1380) had often told him Christ taught her when He first began appearing to her:
"Do you know, daughter, who you are and who I am? If you know these two things you have beatitude in your grasp. You are that who is not; I Am He Who Is. Let your soul but become penetrated with this truth, and the Enemy can never lead you astray; you will never be caught in any snare of his, nor ever transgress any commandment of mine; you will have set your feet on the royal road which leads to the fulness of grace, and truth, and light." (Life, no. 92. Original: "Tu sei colei che non è; Io sono Colui che è.")
In my view, "You are that who is not; I Am He Who Is." fits much better with the thomist philosophical framework than with the scotist. Because it shows unequivocally that "being" in us and in God must be understood analogically, not univocally.
From another angle, the key difference between us and God is that we are something of which "to be" is not part, i.e. "to be" is not part of our essence. But clearly we have an essence, therefore existence and essence are really distinct. In contrast, God's essence is "to be", therefore God's essence is his own (unreceived, unlimited and eternal) act of being.
I responded in the comments with what I meant to be a quick note, but which turned long enough for a post of its own, so I reproduce it here:
First, of course, Scotism doesn't really need to accommodate a private revelation as such, even an approved one, but the data of faith. That being said, the notion Johannes brings up ("You are that who is not; I Am He Who Is.") is a very common one and isn't at all in conflict with Scotus' thought.
It's important not to look at a theological or philosophical difference with Thomism and conclude that, since the Thomistic distinctions are not deployed, there's no way to accomplish what they accomplish. You have to look at Scotus' thought itself and see whether it conflicts with the datum explanandum.
Much of the "work" that Thomas accomplishes with the real distinction between being and essence is accomplished by Scotus through the deployment of the concept of intrinsic modes. God is being, and has being under the aspects of all the coextensive transcendentals; after that his most salient property is radical infinity. Everything but God is finite; in his infinity God is utterly, radically, supereminently other than every other being. Moreover there is no commensurability between the finite and the intensively actual infinite; by comparison with infinite being every finite being is, so to speak, equally infinitely deficient. We could say that the incommensurability is so great that next to infinite being every finite being is nil - I think Scotus would say, however, that this is true only metaphorically.
So we can see that the same "work" is performed; the radical otherness and distance between Creator and creature is preserved; but not using the same distinctions, because for Scotus the Thomist ones are ultimately incoherent. Whether he's right about that or not, however, has little bearing on whether his own system of thought achieves the same result.
From another angle, the key difference between us and God is that we are something of which "to be" is not part, i.e. "to be" is not part of our essence. But clearly we have an essence, therefore existence and essence are really distinct.
Again, Scotus accomplishes the same end but by using a different set of conceptual tools. For him as for the Franciscan tradition commonly, the real distinction between essence and existence contains an incoherence, because a real distinction implies that one or both of the distincta can exist without the other; but the essence can't exist without having existence, and the existence of an essence can't exist without existing under that essence. So neither essence nor existence has real being without the other; so they are not really distinct.
However, the difference between Creator and creature is preserved in another (hopefully more coherent) form, by adverting to the radical contingency of the creature on the one hand and the radical necessity of the Creator on the other. Contingent being by definition is utterly dependent on another and is open to both being and non-being, receiving being only thanks to the intellect and will of some being which is utterly non-contingent. It's just that the act of creation isn't conceived of as taking some vessel of essence and filling it up or infusing it with an act of existence. The becoming of the essence into real being is just its becoming existent.
Another way to say this is to agree with the Thomist that ""to be" is not part of our essence", but on the other hand to deny that "to be" is part of the divine essence, because a) the divine essence has no parts, and b) "to be" is not the sort of thing that can be the content of a quidditative ratio. What we would say instead is that the divine essence is such that it can only exist under the modes of infinity and necessity, while every finite essence is such that it can only exist under the modes of finitude and contingency.