Bowtech bought the rights to the catawba and now hold it "hostage".

Don't know about purchasing.

Here's some reading on the rest.
http://www.huntersfriend.com/catawba-still-shot/catawba-still-shot-rest-review.htm

Looks pretty good to me, I'd be willing to try it out.

Don't let the naysayers get you down. Those who can tune a bow don't have to shoot drop away's.