I can’t say if clamping gains are permanent or not. It’s a little off-topic, also.
I said that clamping is dangerous; I should have add more dangerous than pumping, but why it’s so dangerous? Exactly because it put much more pressure on internal structures of penis than pumping does.
And, Mr. Happy, maybe you are playing with words: if clamping give you X inch gains with 10 hours of work, and pumping give you X inch gains with 100 hours of work, this means that clamping is 900% more effective than pumping - at least if my English dictionary is giving the right translation.
Big Girtha had tons of loose skin by clamping? Literally?
I could be wrong, of course, but I remember having read that this fine guy didn’t only clamping: he did a jelq-like work with clamps, so this is the cause of his loose-skin, I think; but this is not the point.
We are speaking of what happens to most of men by using this technique or this other one: what happened to a single person is not pertinent, because we don’t know all the specifics variables involved (I hope what I mean is clear, tell me if don’t). Loose-skin is a relatively frequent side-effect of pumping, and relatively infrequent side-effect of clamping.
The opinion of urologists count nothing if isn’t supported by facts: referring to that is a sort of argument ex authoritate.
Could we agree that there is some evidence that clamping is more effective than pumping (at least for girth gains)? If so, what’s the reason? Where pumping is failing reproducing the excessive engorgement that starts tunica’ expansion? ttt posted an hypothesis; I think he is right, because it make sense and because what I experienced with both methods (pumping and clamping) seem validate that hypothesis. You say: clamping also cause fluid build-up, but the point is: at the same degree than pumping?
Finally, I think there is no need linking posts of guys that had a softer penis by pumping: is just a too common phenomenon to negate - it’s caused by an improper use of pump? Ok, but again, it’s not the point.
Shortly said, pumping is a bad imitation of clamping.