Right now I have started clamping myself.
I do some light stretching 5 mins, clamp 2 sets @ 10 min each, jelq 5 mins and then clamp for a further set.
The one issue which would worry me is overtraining. Generally most people focus on one thing or another. Clamping is a very high pressure activity and the newbie routine for it recommends at least 3 sets of 10 minutes. I stretch to stay loose and jelq to regain some blood flow, but mainly for that only.
I think taking warm-ups into account, if you are doing long periods of stretches, 15-20 mins jelqing and the min recommended clamping you will probably risk injury and certainly be overtraining. That would be a routine of approaching 2 hrs, too much in my view.
01/08/07: 5.75" BPEL, 5.25" EG ::: 26/05/10: 7.3" BPEL, 5.4" MSEG, [My Progress Pics] - [My Routine]
Revised Min Final Objective: [/b] 7.75" BPEL (33% increase), 5.5" MSEG