It sounds like you and I have the same taste in shoes. "Support" drives me nuts, and the only time I've ever injured my foot was when I tried using a shoe with "arch support". Ick! I like a barefoot-style walk.

My current boots are similar to yours -- unpadded GoreTex leather ankle boots -- but with a Vibram sole, weighing in at 1.5lbs per boot. Those Inov-8 shoes look very interesting, I might just have to try a pair of the Roclite 288's.