I don't think there's a guarantee for any of that in regards to the first question. I'm a right handed catcher in hockey but catch with my left in baseball. To make things worse (better?), I shoot right handed, so in hockey I'm in the opposite scenario most goalies are: I shoot forehand when I'm passing the puck.
I think the best way to find out would be to try. It should feel instantly problematic if you're using the wrong set up. I was once bugged by a coach to use field hockey equipment "how it should be used" (right handed goalie set up), and I was lit up in the span of 30 minutes after posting a shutout for 30.
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