I don't see a real problem using a SA for defense (assuming some proficiency). Sure, there are some disadvantages...but I do better instinctive shooting with them and that is what you will probably be doing if it is dark and you don't have night sights. Might keep you from quickly missing six times too.
Full power loads in a 44 mag are probably a little loud indoors, something to consider. If I were to use a SBH for defense, I would try Speer 225 gr swcjhp between 1,200 and 1,300 fps. They have quite a bit of soft lead exposed and expand well, even in small animals. My guess is they would work well for defense...maybe no better than the Gold Dots, but one I would try.
I am also curious to hear what bullet switch you made in the 9mm.
My .02, dvnv