I've done this and continue to do so, 1-5 Pull-Up + 1-5 KBS, I do seven rounds of this totaling 105 reps of each. I alternate from one to the other, if you do it slow and steady its a good time. If you do it for time it produces a nice metabolic wallop.
Figured I'd share I didn't read the Mark Twight thing because I'm busy but I will. I figured I'd jump in anyways just to be a pain.