Ha,ha, Bill! "Slave..." Good one. ;-)
I just prefer personal emails.
About your Q: Clean and PP would be better than JK, although you can use both. For you, it was a matter, if I recall, of you being close to your cert. You needed the tension practice. There is no jerk at SFG so playing with it would of been a waste of your time at that point.
Here's the cool thing about the Push Press: It's a quasi-ballistic. It's initiated with leg drive, but to get strong and move heavy weights, you still have to push the bells from your chest with your upper body. The inertia stops about hairline height and it's all upper body. Now the interesting thing is if you're not pushing hard with your upper body from the beginning, the bells will stall as your triceps try and kick in.
I'm sure someone will try and argue with me on this one, but like Rif says, "It's all easy til it's heavy." Try Push Pressing 315 without driving hard with your upper body from the start and get back to me...
And Mark, you can do it with a "cheat" press - that's a press with a little leg drive - not a full dip like the Push Press. And you will get stronger. Let me rephrase that, you MAY get stronger. Depends on the person. I see a positive transfer in my pressing strength from my Push Press work. Why? Probably systemic overload. For example, I'm currently Push Pressing, but not pressing. My submaximal press work has increased without any pressing. Why? Like I said, systemic overload. The entire system is taxed with the heavier load from Push Presses, so the whole body gets stronger.
Will it work for you? Dunno. Give it a shot and test it out. Pushing heavy weight over head feels durn good.