A morning after heavy drinking is always going to be subpar because the alcohol is still present in the blood.
One thing I’d introduce in my concerns over clamping is age. I am 49 and in no way are my valves stellar like they were at 20-25. Any type of self-damage would be difficult for me to reconcile psychologically, tbh.
But I have time before I move to clamping (my final PE project), so hopefully some more comes to light. What would be useful is to know some of the ages of guys who have gained from clamping and report still having good EQ.