Well...they are on my foot now...the heel is definitely better than 5.10's, but that isn't saying much...they are a slight bit softer than velcro anasazis...all in all, my money says they will climb just as well as 5.10's (and better than sportivas)...
Pretty good shoe...
That new 15a got sent in the laceup version, and a chick sent a 14c or d in them, so they work as well as anything on the market for overhanging limestone...