This is a great shoe if it fits you well. I've had no issues with wearing the the shoe material, nor with straps breaking like i've seen on lots of sportiva muiras. i'm not the biggest fan of the rubber, but it did get sticker after a break in period.
i wish there was more velcro area to stick the strap to for a more dialed in fit. however, i haven't had any issues with the straps coming undone lake my last pair of katanas. adding the third strap from the original pontas is also a nice touch.
If your style of rad involves lots of steep and aggressive front pointing, this may not be the best choice.