Hi David,
I am one of the oldies on here, 42yrs with my K pouch and quite a few revisions to be able to keep it (essentially due to my underlying disease, Ehler's Danlos syndrome which keeps my body from healing correctly so things come 'unglued' or fall apart easily).
I LOVE my K pouch. It is not just a lifesaver but a life changer. I couldn't, at 18 deal with the idea of an outside bag. I couldn't deal with another ostomy...I had had a colostomy at age 2...not a great success and I got reconnected only to leave me functionally incontinent. My battle to not have a bag led me to gracillis muscle grafts and an assortment of various medical tortures...In the end...this is what gave me a life.
I was able to go to school, move away and travel.
When I am good (mostly high protein diet with lots of blended veggie soups, some raw veggies, a bit of this and that...nothing forbidden except what has been already mentioned by others) I can be in and out in under 4 minutes...I drink a lot of fluids, love prunes and grape juice, and nibble on raisins to keep things going...I drink carbonated drinks and am very active...I also sleep through the nights without difficulty.
What is the difference between the two pouches? The living collar on the BCIR. My K pouch surgeon gave me one about 10yrs ago to give my valve more stability. Do I like it better? NO, not really, but it works. Many K pouch surgeons do a modified living collar now...Which means that both types of pouches are essentially similar.
I am going back into O.R. tomorrow for a little clean-up in my abdomen and my surgeon will take a peek just to make sure that my pouch is where it belongs and doing what it should.
Personally, I highly recommend it. But it is a very personal choice. You also have to understand that the after-sales service is limited to a small number of surgeons...so if you do not heal well, it may be a problem.
Good luck and P.M me if you need any advice.
Sharon