Nope, the only effect seems to be if he’s in it a LONG time (a week or more) you temporarily shrink just a little bit but he’s back to full size within a day or two.
I actually, kind of love the fact it shrinks him a bit now, which is crazy as I love big cocks (again a fault of falling in love with this kink…).
Sometimes if I edge him really close, he doesn’t ruin but he kind of loses his libido, not sure what’s going on but it means he shrinks again. And I used to see that as a sign to stop playing but now, it turns me on. I add some more lube and keep fondling his shrinking cock knowing if I did it hard, he’d get hard, but deliberately being gentle to keep him soft, it drives him crazy.
Then I tease him about not getting it up, and that I’m going to cage him again, and then I get the big dildo and play with that, and maybe make him wear it to fuck me or just use it on me. So hot – weird I know, but still, hot!