The Canon version is nice. A few years ago I wanted one for when I was out on a boat and didn't want to worry about a neck strap (I hate neck straps). It worked great on the boat, but it soon became extremely annoying and impractical in other situations. I was missing shots because I couldn't fit my hand into the strap, or I wasn't even putting my hand into it and shooting over the top. So I came to the conclusion that I only need a hand strap when there is a chance that I could be hit hard enough that I let go of my gear, and for most of my photography, I don't get hit hard.