I started hiking in full uppers, then switched to trail runners (New Balance, as they were one of the few shoes wide enough for my feet), even with a full pack I'll use trail runners, I find I don't need the ankle support as much when I have more flexibility in my foot.
Recently I've been using the Vibram Five Fingers, my girlfriend (who also loves them) and I have hiked the Moats and King Ravine, Monadnock, Nancy and she did Huntington ravine recently (maybe a couple others too) and so far they've been great. I recently upgraded from the KSO to the Trek, largely for the thicker rubber (I find I occasionally step on small rocks the wrong way and there isn't quite enough protection with the KSO for my taste, I hope the Trek will be better), I should get to try them this weekend. I find the traction outstanding, but they do take a lot of getting used to as far as building foot strength. I'm going to be sad when fall comes and I'll have to change back to clunkers for the warmth.
I guess it just depends on your hiking style
Recently I've been using the Vibram Five Fingers, my girlfriend (who also loves them) and I have hiked the Moats and King Ravine, Monadnock, Nancy and she did Huntington ravine recently (maybe a couple others too) and so far they've been great. I recently upgraded from the KSO to the Trek, largely for the thicker rubber (I find I occasionally step on small rocks the wrong way and there isn't quite enough protection with the KSO for my taste, I hope the Trek will be better), I should get to try them this weekend. I find the traction outstanding, but they do take a lot of getting used to as far as building foot strength. I'm going to be sad when fall comes and I'll have to change back to clunkers for the warmth.
I guess it just depends on your hiking style