I should (crossing my fingers here) have a SmartRest in about 2 weeks according to the fine folks over at NAP. I will let you know how it works out for me when I get it.
If you are really anxious to get one you can purchase the exact same rest relabeled and repackaged as a Hoyt dropaway rest with their logo and bracket on it. It even has the NAP SmartRest sticker on it, but I just couldn't bring myself to put one on my Allegiance. It would be like putting a Chevy emblem on my F150.