Anybody who notices is paying way too much attention to you. As a fellow sexagenarian, I can promise you that very rarely happens at our age.
seriously, if it's comfortable and solves your problem, who the hell cares? I separated a shoulder several years ago and rode around for a year with one brake lever two inches higher on the bars than the other, because I couldn't reach it in the normal position. Nobody ever commented on it, and I wouldn't have cared if anyone did.
Back in the day, several manufacturers made "dummy" levers for tandems, like the mounts without the actual lever. You could hunt up some of those, or just take the lever part off, bolt on the mount and fake it.
Last edited by Velo Dog; 03-04-09 at 05:29 PM.