Dual Personality rear Uprights ( Handy Andy?? )

[Bonzo]

The first thing that springs to my mind is ..........On the drum set up, the drum backplate is rebated to the same profile as the RU plate on the upright

Might be possible with a re-design of the uprights but the most obvious choice if unsure of what you want, is to make the uprights to suit drums & if the need arises, buy some adapters from 3GE for disc conversion