I have worn the Keen Targhee's (not sure if they're the "II" model)for quite a while with no problems. There is one very small spot where the rand seems to be separating from the upper, maybe 1/2"-3/4" long, but it's been that way quite a while and hasn't gotten any worse. Barge Cement would be the appropriate adhesive (from a leather shop or maybe a shoe repair shop) or maybe Shoe Goo.

I like these boots, too...I hope they continue to hold up. I found that they had less vertical toe room than I wanted, so I replaced the insoles with the flat green Spenco type (I don't need the arch support.)