I have and use both, when I swap over to my wrist release for hunting I have to shorten up the draw length 1/2 inch on my bow.

Things I noticed:

- thumb trigger is less likely to have target panic, but it doens't remove it.
- if you shoot a thumb trigger properly its easier to be more consistent (its also easier to shoot it properly than a wrist release)
- I had fewer "bad" shots, or rather my "fliers" weren't as bad.

I hunt with my wrist release however because I just hook it onto my wrist before I leave the house and there is stays. My wife hunts with her thumb release and just hooks it onto the string loop while sitting in the treestand and leaves it hanging there.

My thumb release makes a fairly loud click when shot, which is one reason i don't hunt with it.