If you restrict the blood flow only at the glans level how does it help with the rest of the penis?
I think it must be a matter of degree .. the ring around the glans might stop, say, 50% of the flow and then that is enough to get a chain reaction going to close off those damn veins. Also it is arteries IN and veins OUT -- the arteries being the cavernosii.
Mostly I was just making a prediction that it could help some based on what I have seen -- even if it seems counter-intuitive. (And it is up to the Venous Leak crowd to do the all-important Field Trials).
J