Ka8, correct.
Pitch 10, release. It will stay at 1 G - keep the pitch.
Roll is roll rate, just as you suggest. For 1 g keeping during accelerated manoeuvres, i never thought of it. It defenitely does not do the silly things you say, perhaps the sidestick 1 g keeping is in fact 0 g change keeping, measured along vertical? It trims automatically for sure, but definitely yo do have to pitch up in turn to keep it level (I doubt in manual it would adjust pitch itself - uncommanded manouevre).
Bank at any angle (up to 67deg) and you will maintain altitude.
Will it, really? Honest question.
Cheers,
FD.
(the un-real)