I tried one once with a favorite provider who is also a friend - she just wanted to see how it felt... She inserted it, I did my part and felt myself "bottoming out" on the closed end... very distracting for both of us... after a few minutes, we agreed to go with plan B (a regular condom). I am not a donkey dick, so it appears to bottom out with any guy...maybe it wasn't inserted all the way?
I tried them a few times. Friend/provider got a sample pack of six different makes, 2 of each. She tried them with me and another guy. Later the 3 of us talked about them. 2 makes we liked. The rest were trash. They are to hard to find, and cost to much for the ones we liked in upstate NY. The ones we didn't like are carried in the adult book stores for way to much. None where as easy to use a male condoms. The ones we like where very good.
I've tried it once, with the help of insertion from a buddy , it wasn't horrific. However, I wouldn't be inclined to use 'em all the time. Lol, a pain in the arse more than anything else.