I did the same thing. I went from Nursing School to Endo with a little over a year of experience and an ER Tech. That was helpful because during that time I was able to gain comfort with quickly assesing when a patient is about to "go bad" as well as deal with emergent situations that come up whenever you deal with narcs.
Dunno about a Drs offive but I worked Endo in a large hospital. We saved many people from "investigational" surgery as there are many things that can be done via endoscopic means vs other exploratory laps or invasive ab surgs. We also got GI bleeds, we found the source and stopped it. Many more are requesting having endoscopies as second opinions vs being sliced and diced. Oh and Colonoscopies are the only was to both see and treat a whole host of common problems.
At the hospital I used to work at, we did the double ballon endoscopy in one of our larger procedure rooms with Anesthesia present. As it is a new procedure, finding endo clips, forceps and other toolsthat would fit through the scope was a challenge.