RE: To those who have "crossed over..."
I made the switch from right to left because of eye dominance. I started with a little over 50# because I pull 70# all the time to keep in shape. I can now shoot better and more comfortably left-handed. It's also fun to switch back and forth with customers watching while I demonstrate technique/form.
Just last night I was tuning a MZE on a new Mathews Safari bow. The muscle bound young man asked me if I could pull it at almost 100 pounds. I pulled his right-handed bow right-handed and then proceeded to pull it with less strain left-handed. I handed it back to him and said "now you do that". The look in his eyes was a "Kodak" moment. My right shoulder hurts a little right now after pulling that thing about 40 times. It was a bear to tune at that poundage.
The point here is to show how much my muscles have developed over a year and a half of shooting left-handed. The poundage to me, however, was not quite as difficult as the coordination of getting the arrow loaded and my release on the string. Now it's second nature; but, it was funny to watch when I first started shooting left-handed.
Go for it. I don't think you'll be sorry at all. I'm not.