I trust my generator.. For one thing a computer monitors it and if it goes wacko it shuts down.. Though there are places where I use "Belt and Suspenders" (times 2) this is not one of them.
What do I recommend: A Progressive Industries HW-##C wired in the shore line AHEAD of the transfer switch (personal choice) the ## is the same as your RV (30 or 50 amp).
And set it for long power delay (Clip the jumper)
WHY the HW.. Well you never forget the HW.. It's is less to "Wrangle" when connecting and it never grows legs and wanders off when you are not home.. PT's can have problems there.
True story (Funny type) Parked at a Moose Lodge (I am a member) and the governor ask me if I had tried the 60 amp outlet.. (I had not even found it but I had found the circuit breakers that fed it.. Dual-Ganged, 240 volt configuration) I said NO, what is it 240 volt.. He confirmed and I told him I'd found the breakers so I knew that.
The outlet looks a whole lot like a TT-30 and I think my 30 amp adapter would fit much to my displeasure had I tried it.
MANY have tried it at such outlets at this or that house or garage or other place.. WITH a Surge guard... You may get some damage to your pride, but that's not all that expensive.
Without the surge guard
New TV, New Microwave, New Converter, New most everything that runs on 120vac. This can get kind of expensive.
Home is where I park it!