I carry my A01-LD but it would seem in very different environments than you. I also carry a 45 colt shot shell derringer if I go into the snake lands around my house. It seems silly to me to carry multiple, especially really heavy, pistols, but in the end I am just far more comfortable with the A01 for most situations, except snakes. The 45 shot shells just eliminate everything within some 5-10 feet, which is all I need in rattle snake land. That number might be different for you since I don't know how water moccasins behave and how effectively they strike from distances, or if they tend to travel in groups. Rattlers - you can go a lifetime and never see 2 coiled and ready to strike in one day. So the derringer, so far, has served its need very well.
I'm in the camp that says carry what you are most comfortable and competent with, even if it is an enormously expensive race gun that might very well find itself in a box on a police shelf someday over a non-situation, and never to be returned. When it comes to life and death, don't grab something less because you are afraid it will be confiscated.