Beal Birdie Belay Device
When you have to overcome the camming device to feed out several arm lengths of slack quickly, you press on the camming unit with your thumb. I found myself wishing there was some sort of finger catch on the side of the device for my index finger, so that I could more easily maintain my grip on the brake strand with a couple fingers and also apply apply counter pressure to steady my hand. Since there isn’t such a feature, the Birdie requires a bit more dexterity than other devices, but it was something I adapted to quickly enough.