I have griplock issues from time-to-time throwing RHBH (which is my norm) I can't even begin to imagine how bad it would get if I tried LHBH
However, It would be cool to learn both, at least in that case If I want to throw some crazy tomahawks, I could do so with my left arm, and not roast my right arm at the same time. HOWEVER, considering I can't even throw a baseball worth a damn left handed, I don't see a miracle where a disc is involved.