Yeah I don't imagine I would normally have it wired up; just when the power goes out and doesn't look like it's coming back anytime soon, so I probably wouldn't care too much about a transfer switch. I'd just plug in the genset and start it up.
That being said, the size of the unit is a concern for me. I want to fit it into my fifth wheel basement without giving myself a hernia when it's not in use; if that is not an option, it should go in the bed of my truck and not interfere with the hitch. Naturally, not giving myself a hernia getting it in and out of the truck bed is important too. I have a strict no-hernia policy.
I guess the first question is, what capacity (in watts) does a 50A "shore power" duplicate? All my previous RV's have been travel trailers with 30A service, so I'm kinda out of my element here. There's an added complication in that I believe the 50A is two-phase 240V, whereas the 30A is single-phase 120V, so I'm not clear on the minimum specs my genset needs to support.