My present doctor counters that that will be acceptable but he may have to reschedule if there is any stool in the way.
Not sure how many pouch patients this doctor has but once, after being IV'd and prepped in the pre-procedure room, I was asked to wait in the Yale endoscopy recovery room while my Pouch specialist was dealing with a patient emergency and was over an hour late for our scheduled pouchoscopy. It's a large endoscopy center but mostly colonoscopies. I heard numerous patients (not visible to me because curtains were drawn) being scolded by their doctors because stool had prevented a clean scope. I even heard one guy being told, in a state of groggy sedation, judging from his mumbled and slurred responses, that he had numerous polyps but his doctor "could not even tell how many or get clear visuals because the bowel was full of stool." He ordered a re-test in disgust. My paralegal even admitted to me once she could not do the full prep, "failed the exam", was told to reschedule and then never did, because she was charged $1000 or whatever and it went against her deductible.
It's true that pouch patients often get "one size fits all" colonoscopy prep instructions, and it's also true that doctors not used to doing many pouch patients tend to overprep for reasons stated in paragraph 1. Fortunately me and my doctors have good communication skills and we have always been on the same prep page. In the last year my doctor did adjust the laxative component of my prep, which had been Magnesium Citrate 1 10 ounce bottle. Instead, I take 4 tablespoons Milk of Magnesia. The prep is otherwise the same: clear liquids after noon the day before exam, Milk of Magnesia 8 pm night before, warm water enemas the morning of 2 hours before. It is pretty easy and I have never "failed" my exam or had a doctor scold me for having stool in my bowel. You cannot drink certain colors especially anything red like cranberry juice or with red dyes in it.
The best part of the exam is afterwards. The endoscopy center I go to now is right next door to a great Asian fusion restaurant, Thai, Chinese and Japanese, and they do all 3 cuisines well. I usually go there with my Dad after the procedure, order takeout and then go home and rest. My Dad really likes their miso soup and sushi, and I like their dumplings and noodles.