flipping is just a "different perspective" .. you can flip prices with 1/price and then flip ask<->bid .. that's it .. do not expect to be able to 'short BTSX'!
Is that why the price is always named 'ratio'?
I detect a problem with this idea:
buying BTSX with USD, priced 1.0001 USDs, ratio = 1.0001
flipping the market:
1 / ratio = 0.99990000999900009999000099990000 recurring which isn't going to fit in any amount of precision?
Wont this cause problems all over the place?