honda inverter genset does not have a bonded grd to neutral
you can not have a hot neutral reverse, when both wires float, and there is mo grd
both wires 'float' at about the same 60+vac about grd lug 'potential'
there is no current path to grd lug of the outlet ( so an outlet tester always reads open grd ... Not reverse polarity )
this would occur only thru wrong wiring of a home made bond adapter
or a faulty tester
i belive you will the honda invertet would shut down if there was an internal short in the inverter section