would this club count as one or two?

If you had a putter with a putter head on each end, is it legal? would it count as one or two of your 14 if legal?

Benefits might be having a different weighted head for very long putts vs short puts.

Of course, it might force one into a grip that would make the "claw grip" look comfortable by comparison......

It's not legal, but I've a feeling you knew that. ;-)