I wouldn't consider strength of the grasp of any importance. In some places a good grasp is more of an indication of attentive communication (as in "I'm listen

I wouldn't consider strength of the grasp of any importance. In some places a good grasp is more of an indication of attentive communication (as in "I'm listening/ready") than "macho-ism" of any form. I've rarely seen strong grasps as an indicator of "macho" except in early adulthood/teens, where it's mostly a form of play. On the contrary, a very flimsy grasp gives you exactly the opposite: the handshake becomes an afterthought.