I'm a lefty as well is my partner and last year we both decieded it was time to buy an autloader b/c we'regoing to join a fun trap league.
Both bought rh autos and no problems with debris,etc.Ican say until I got use to my berreta I did notice the cycling but now it doesn't bother me.
If doing it all over again and buying new if a LH was available in the model I was interested in I'd probably pay the additional cost for a S paw version.Mines a hoot and wonder what took me so long