Custom battery trays?

[lambchops]

Is it possible to have one of mikes battery trays which can take two diffrent size lipos? What i was thinking was a "normal" size tray which would fit a 4s hyerion but with a cut out section in the middle which is wider so can also take one of the zippy packs laying flat which are wider but not as long.

Will try and attach a pic of what i mean..