I've been skating a pair of Fastbreaks in the white/red color way and I've loved them so far. Definitely true to size, which is nice. My pair still had the Lunarlon insoles, so they're super comfy too. I try to only skate cupsoles, even if they're thinner ones, and these were the perfect balance for me. Mine are starting to wear through the sole, and they're still supportive enough. It's also damn near impossible to find another midtop cupsole.
As for the side material, I think it's nylon and definitely doesn't last as long as suede or leather. I super glued mine after one session when I could tell where the wear would be, and have been applying tiny bits of shoe goo and super glue when needed. It's not ideal, but I think it's worth it for how well they skate.