The interesting part is going to be whether it gives you force-feedback "clicks" in Windows, or whether in Windows it will act like a basic trackpad with tap-to-click, without any sort of feedback whatsoever (ewwwww).
If it doesn't give any "click" feedback when outside of OS X, then for frequent Bootcamp/Windows users, buying a non-Force-Touch model of Macbook now might be in your best interest.
-- Nathan