I make my own hand strap from unwanted bag's strap. Didnt remove the neck strap cause still usefull to have it on, so can sling or grip the camera depending on situation. Can meet up if you want to take a look.
Sorry OT a bit.
I highly recommend anyone considering the Handstrap E1 to consider the Zing handstrap, which uses Neoprene material.
I've no vested interests in this, just that I've been very happy with the Zing, so thought I'd share with all here.
My cam comes with the E1, but I found it too restrictive and uncomfortable for my liking. With the Zing, the thick neoprene acts as a cushion. Its elastic properties make the Zing fit more snugly around the hand too.
It makes use of the tripod hole, and together with its elasticity, provide more leeway for the hand to reach the controls. It can even fit cameras without vertical grip, though I've heard that it's not as comfortable.
Managed to get it from someone in CS some time back for $30, cheaper than the E1!
Perhaps some kind soul could organise another MO?