I don't even know how GiL does it, but I'm infinitely glad he does. :D
I did try out RPG Maker several months before running across ORK, especially since I'm making a 2D game, but you need to get like 43 plugins before that tool can do anything worthwhile. Even when you do, it just doesn't compare.
And like Shadow_Fire, I got into ORK immediately after Unity. Even though there are still so, so many things I don't know, it never ceases to amaze me how much I can get done. =)