Your point #1 is a great point.
Of course... I gots nothing!
Your point #2 has already been addressed, and even by the very firearm you already mentioned yourself in the opening post. The Circuit Judge has built-in deflectors specifically mounted so that you can hold this long arm as you would any rifle or shotgun, with your primary hand on the grip to manipulate the trigger while your off hand is on the fore end to support the long gun.
I can tell you that at the very first moment I heard of the Circuit Judge and saw the picture on the 'net (news was likely broken at the SHOT show some time ago), my first reaction was...
"uhh, now HOW do you shoot a revolver without blowing apart your forward hand?!" And that must have occurred to them as well, as they designed shielding in to it.