I think that the OP has a valid point. This is not a new phenomena. Look at the Vintage Kilted pictures. How many men are standing hand on sword hilt, or holding hunting rifle or fowling piece, or holding a walking stick or a chromach and the other hand keeping their day plaid from falling off their shoulder?

It is almost as if we are pre-destined for our hands to be 'doing' something.

Regards

Chas