Just realised that since no rest is allowed beween SE and iM, the most badass way of performing sPL/SE3 and the iM would be to just lower from the tuck planche, when the time is up for the hold, down to the bench arm planche, do the reps, press up to tuck planche and repeat. Since you'd probably have to be VERY badass to pull this of, well I won't/can't do it.
However, I suppose it would add a bit of neuromuscular complexity to the everyday training sessions, to lower into the bent arm planche after the tuck hold has been completed?