IHG doesn't last long at all... even when coated with #26... though if you pile on several coats of #26 you will get longer life out of it. Though really i would glaze again in another month or so.. then again i'm probably a bit excessive. You have to remove the wax to glaze though (i think). I'm fairly sure you only glaze the clearcoat and glazing ontop of the wax will have wierd effects.
Glaze works fine if you just wash the car and apply it to look shiny and not get wax build up. It just leaves the car feeling a tad grimmy cause its not a wax-based product. I put a spray detailer on top of it and it looks and feels great now.