Chopski,
My understanding of the R22 is that 'it is, sort of'. Without trying to put words into Frank's mind, the pilot was placed on the RHS first in the initial design. (Simpler mechanics for collective down the centre of the a/c, left hand available for radios etc). The main tank was then placed on the left for balance.
(The aux tank was only an afterthought - ie not included in the original design - and so had to be put on the right).
But like I said, I'm not Frank, have never spoken to him about it, have not even met him, so I could be wrong. It makes sense to me though.
Regards,
B73