I thought that the handle on the B11 was pretty much the same as the dogfather handle.
That said I can't help but put in another plug for a SYKCO Magnum 11 regulator
The B11 handle is noticeably thinner and smaller in my paw. It also is probably the last time we will see that small handle. All the rest should be Dogfather size as they reportedly used remaining stock on the B11s. I like the Regulator handle for a fighter weight blade but not for a General Purpose or chopper. The double guard makes it harder to choke up on for me.