Hi this is Kitt. Boy that is a tough one as both physicians are GI and therefore engaged in the same medical speciality. If you were going from PCP to speciality then your PCP will usually accept the recommendations of the specialty physician. When you seek a second opinion it is touchy to bring that opinion back to your current GI doc. Unless the opinions match, this is a tough one.
I too will be interested to see how others respond. I wish you the best and keep posting.