J-pouch surgery is an option for some but not all patients. The surgeon who removed my colon cut too much tissue so a J-pouch was not an option. I am very, very happy with my K-pouch, though.
There are maybe five surgeons in the world who are highly trained and skilled enough to create continent ostomies like K-pouches and BCIRs. WARNING: there are a LOT of unscrupulous surgeons who CLAIM that they know how to do it, or that they can do repairs, and instead damage the continent ostomy or even REMOVE it. PLEASE be careful when choosing a surgeon. Check these boards for RECENT recommendations from patients who have actually been treated by a surgeon and endorse his/her surgical skills and post-surgical care.