Gen, without any symptoms the risk is probably modest, but it isn’t zero. If you had dysplasia previously then the risk is considerably higher. Most folks here have pouchoscopies more often than I do, typically once a year or two (it’s probably been at least 5 years for me). The two main things thay’d be looking for are 1) cancer or dysplasia in the rectal cuff, and 2) significant inflammation without symptoms. Both of those are well worth knowing about, but a general surgeon with no pouch experience isn’t the best partner for this. In your shoes I’d skip this “opportunity,” not worry about it, and get a scope when there’s a reasonable opportunity to do so (by a qualified practitioner).