Nope, no pleasure at all from urge incontinence. As for what it feels like it's just like you've got a really FULL bladder and have to go RIGHT NOW! If you've ever tried to hold a really full bladder and then had someone push on your bladder that's pretty much what it feels like, not fun at all!
I've been able to reduce the number and severity of the urges I get by trying to pee as often as I can. Unfortunately for me this isn't always as easy as it sounds since my enlarged prostate makes that a little difficult sometimes, but when I can it keeps my bladder from getting very full and seems to really help, but not completely eliminate, the bad urges. Couple all of this with pretty bad drips/dribbles after urinating and yeah, I'm in diapers 24/7. It's way better than constantly fighting the urges and hoping you can find and/or get to a bathroom in time not to soak your pants.