They do, but I find the TR much more comfortable. It's kinda shaped to fit the curve in your palm while the CB I have is basically a straight hunk of plastic. The CB is one piece of plastic that you have to pull open to fit over your grip while the TR uses velcro. Folks have opined that the velcro is a step down from the molded plastic, but I have found that as long as I pull it tight it doesn't move.
Both work and like most things it comes down to personal preference or sticking with it until you're used to it. BTW, the CB is claimed and I'm mailing this weekend. Jim