Never bought into the dual jaw thing.
Fletcher Fletchunter Shorty has been my fave.
Somebody else makes em now.....Buck Rub Gear.
Over a hundred bucks.

I scored my orig NOS for 75 bucks on Ebay last yr.
Two of my hunting buds have gone back to the Shorty after trying other stuff for a few years.

Guess we all like not being cool LOL