All of our TC's have had micros...just because they were already there. We have yet to use them...except for storage, as we rarely camp with electricity.
I would skip the built in genny and go with the H2K. Then you only carry it when you need it. We have a great big genny box that fits the grill, leveling blocks etc. When ski camping, and we need the H2K, that's where it goes and the grill stays home then.
The other issue for us with built in genny is we need a genny when we also need a lot of propane-winter! The H2K runs on gas and the propane is saved for heat. We can go 3-4 days (10-12 hrs run time) worth of genny time with just the 1 gal of gas in the H2K.
Good luck. Love our EC!
Bill