I got the chance to find a pair that fit perfectly size wise and figured I'd give them a try. They fit well across the foot, the arch cutout felt fairly comfortable but I could feel it was there so over a lot of miles it could easily begin to bug me. The retention system and straps were all snugged up and the shoe felt really comfortable on then I took a few steps in them and my heels slid right up and almost out of the shoe each step. I tried tightening them down a bit more but same issue. Looks like I'm sticking with my sidi's for the time being. Another new flashy shoe with bad flaws.