Marilyn
I have here at home, on loan, a Castagnari Lily that has the accidentals reversed. The same notes on the same buttons but push-pull reversed. Very interesting to play - some nice things become possible, others don't work any more.

I've heard of other players reversing them in this way.

It looks like a good idea though. You can play decent right hand F, E and B major chords and the E and B fit the basses too. You can still do C minor and Eflat but in quite a different way. Tunes in G minor work better with the Bflat in the right direction but D minor doesn't works so well.

You can't really do a G7 anymore, nor the Eflat7...

Hmmm... it's a big change to make, and have to re-learn everything that uses accidentals...

Anahata