know guys that do...most just wear a roost guard. I've taken some good hits in my roost guard and even taken some good shots from tree branches. I can see where if you got all wadded up a tekvest might be more comforting if you got a handle bar the guts....but damn you would be hot...I get to hot wearing a mesh jersey, under armour and my roost guard.
All the same I thought Bee-wear was coming out with a vented vest for the dunes.