I'm LH. Got a chance to fondle both a RH and LH SBE II the other day.
I decided a LH auto would require me to relearn how to load.
Hulls out the right don't bother me.
I buy Benellis because of the shim kits.
The bolt release button is still on the RH side with both the LH M2 and SBE II, so you either have to reach around or swap hands.