I read pumping and taking sildenafil makes the skin darken up even more, but I can say that for me it’s the other way around. The 11/10 erection provides a better grip for the tube and less pressure is needed, so less skin discoloration and more glans expansion.
I don’t know anything about cementing gains, I would guess long erections are good for cementing gains, that’s what I am doing.
And if you want my unexperienced opinion on sildenafil, it’s better to use it at least once in a while, especially if you’re a PEer who doesn’t have such a high libido and maybe doesn’t even have a decent sex life, etc. I know others say not to take them, work on kegels, work on jelqing, edging, EQ…but sildenafil is cheap, quick and with underrated long term effects IMO, like self-esteem increase and studies show it boosts testosterone. Sildenafil is half the price of Viagra btw, don’t ever ask for viagra. Most people probably don’t ask for sildenafil and they’re getting ripped off. Tadalafil is more like a “drug” drug IME. One 20mg cialis pill lasted me for 3-4 days, 2 days strong with pop erections, I could get into an edging/jelqing session at any time of the day. But for PE purposes, sildenafil is better. It acts quicker and it gives a very hard erection, very hard compared to tadalafil even. BTW, Cialis (I couldn’t find generic tadalafil at the drugstore) is very expensive compared to sildenafil, SILDENAFIL is VERY CHEAP, it’s like : Thank the Lord for it, it’s around 0,85 USD/50mg pill where I live.
If I were to advise one of my friends who was having ED troubles, I used to have such friends but we’re no longer close so I can’t tell them, I would wholeheartedly recommend sildenafil. I don’t have ED problems, but I do have anxiety problems and many experiences from the past I don’t like to remember, taking sildenafil and pumping for 30 min in 2” tube at low press., then 30min 2’25” at low-med. pressure, then a 1-2clicked 10min clamping set with some serious measurable expansion, and I get further away from those memories as I possibly can somehow.\
FWIW, I was already PEing for more than 2 years till I popped my first 25mg sildenafil. And I only occasionally take them because of their lasting effect completed together with PE exercises like jelqing/clamping/pumping/edging.