Just saw this thread today. I could have used it in October and December, as I had scopes done in each of those months. I have an ileostomy and was a bit nervous, too, but the 'light' anesthetic they gave me both times was great! The second time I was really well under, as the doctor was going to look further along my small intestine. Other than feeling a bit sore in my tummy for the next day, I found the experience went very well. Especially when the doctor said he found only a small amount of inflammation, and I didn't need any medications at this time!
As for the prep, I was instructed to take only liquids the day before the scope, and to take 1/2 the dosage of Pico Salax at 6 pm the evening before the scope. It was important to drink lots of liquids after the pico, as my ileostomy was really pumping out the liquids. I didn't feel any pain of discomfort from the pico.
Hope this helps other ileostomates going through a scope.