the yaak folding mech won't hold up to constant pressure from riding.
the deck is very flimsy, so it'll take a bit to break. it WILL bend.
i've got nothing to say about the wheels. except they'ye some of the best on the market. (especially the new wheels!

)
forks are alright.
i like the grips a lot. not really foam, really weird material.
brake is very, very good!
yaaks are like five bucks.
so, all in all, yaaks make good wheels. and until they individually market their grips, no reason to visit their site.