I suspect that most Class C motorhomes, and virtually all older ones, had the system where you plugged the shore cord into the generator outlet. My Winnebago View had this and it worked quite well after I rotated the generator receptacle 90° so that when the shore cord was coiled into the compartment, that the plug naturally fell into position to plug in without twisting or contorting the cord.
I learned to always plug in the shore cord to the generator when stowing it, this way it was ready for a lunchtime road side stop or whatever else I might use the generator for before the next campground or home. Its simply a good habit to develop.
Now I had also installed a Progressive HW-30 power management system that had a built in time delay to protect the airconditioner (which can be disabled if your A/C has a time delay built in), so I never had any concerns about generator stabilizing or other issues. The Progressive gave the generator 136 seconds to be ready to power the MH. I did make sure the A/C, water heater, etc., was turned off before hand.
This is a good habit to be in, time delay or not, you simply need to make sure the water heater and A/C are turned off first. Other loads, such as the power converter and fridge are small enough to not be an issue, and you will always be ready for the next stop, be it a parking lot keeping the coach cool while you are buying groceries, or the next non-power campground. No jumping out, running around back, unlocking an access door and fiddling with a cord.
My current trailer also had a similar "plug into the generator setup" but I converted to a removable shore cord due to the super small compartment the cord stowed in, so in the rewiring process I installed an ATS and it has a 30 second delay.
Charles