This is the sink/dishwasher bay for my basement apartment. There will be a bottom and a top cabinet, corresponding approximately to below and above the green line. I want to put tile on the wall around, approximately where you can see the cement/backer board between the two green lines.
I understand that, in situations where drywall meets cement board, you typically want to overflow drywall onto where the tiles will be as the tiles can go on drywall but it's hard to emulate a smooth surface of a drywall wall on cement board.
However, this is a little different because there will be no visible delineation, i.e. everywhere where there are no cabinets, there will be tile. So my reasoning was that by reversing the rule from the previous paragraph, I can avoid having to tape join the two substrates. However that introduces the problem of uneven transition between the two (I think the backer board is 3/8" and drywall is 1/2").
In this particular case, is it okay if the cement board overflows the drywall (green line) or should the drywall overflow on the tile substrate (as though the cabinets went below and above the red line), as is normally done?