Here it is kind of an 'up to you' sort of decision. For people with colons they 'encourage' them to take sedation (it relaxes them and makes it easier on both them and the doctors) but for pouches they don't bother.
Sedation requires a longer outpatient stay. More risk, more time (more money.
Personally when they do my scopes (granted, I've got a k pouch so they enter through an abdominal stoma)I do not get sedated. I am much too curious to watch the screen and see what is going on in there.
It is personal in my opinion. Some people feel like they need it and others don't. Talk to your doctor and discuss how you feel.
Sharon