This raises a question that has frequently occurred to me; why does almost every guitar/bass doubleneck I've ever seen, of any make, have the bass on top? Were I to order one, there is no doubt it would be the other way. (The same seems to also be the rule for 6-12 doubles; I'd want the 12 on top - and apparently the only one.)
Peter (who will stipulate that the question is entirely academic, as neither his back nor his "chops" call for such a beast)