A couple of times I ended up with grazed wrists, until I got a pair of wrist guards. Now I have a few deep scratches in my wrist guards, and none in my flesh. :)
Oh, and Franky, have you tried deflating the tire a bit for off-road riding? I normally top mine up to around 18 psi before pavement riding, but I'll let quite a bit of air out when I'm on grass. Makes all the difference for turning.