I have two 20" (German) RCs to install later this year...and frankly a GSO simply didn't make the cut for a number of reasons.
Not the least of which is, while amateurs can and do successfully modify, not just GSO scopes, but a hole bunch of gear (EQ mod comes to mind) as they have the luxury of tinkering plus the time to trail and error various solutions, and often get a very usable instrument....something you wouldn't expect an institutional user to have to deal with.
My own 16RC will be arriving next month...and I have to say I'm getting quite excited about its impending arrival. The test images (courtesy amazing German QC) look awesome.
Hummm
Might do a Marcus and document its deployment