All references to mags are traditionally 'from the drive end', but for the bike as whole I always thought L and R were from sitting on the seat, same as you. Anything else seems plain daft to me.
Or we could have a discussion about the 'off-side' and 'near-side', just to confuse people like me with left-hand drive bikes (special export models - of course). Is the 'near' side of an Italian bike the 'off-side' to an anglais?? Cheers, Bill