24-105 IS is a fantastic lens for this gimbal. F4, but you can't follow focus with anything shallower than that on the gimbal anyway. Works out to about 90mm on my poorly tuned 8 bit gimbal :)
Manual focus is tough. Its hard to get around the gimbal to focus...
Still undecided about which lens to get, I understand the focus issue. Very reluctant to use Autofocus, I don't like it for video. Will have to look at remote focus control systems. Seems like anything up to 30mm f2.8 should be ok, but very expensive.