For flatland bits I would imagine they are fine, but if you're talking about drops, stairs wallrides etc and putting a lot of stress on the wheel, then from what i've heard they are not as tough as deep v's, which would be the minimum I would go for in terms of strength for street riding tricks and stuff, my deep v's have taken a reasonable amount of abuse but are starting to die now, hence i've got something being built up right now that is pretty much indestructable.
For flatland bits I would imagine they are fine, but if you're talking about drops, stairs wallrides etc and putting a lot of stress on the wheel, then from what i've heard they are not as tough as deep v's, which would be the minimum I would go for in terms of strength for street riding tricks and stuff, my deep v's have taken a reasonable amount of abuse but are starting to die now, hence i've got something being built up right now that is pretty much indestructable.