The first one is but it just don't feel right to me. Personal thing I guess.
The second one is a glove but there is nothing there for your hand to grab and draw the bow. It's just extra material around your hand and the weight of the draw is still applied to the wrist.
Another one I really like but can't find in any stores around here is the Winn rope release if you shoot with a string loop.
http://www.winnarchery.com/loop.html