In f/u to my post about reversing brakes and the reply from cross-providence about the risk of messing up because it is reverse of your road/mt bike:
How about keeping the main levers normal (L/front, R/rear), but have a single flat handle on the LEFT side that activates the REAR brake? I know the cabling would be kind of messy, but it should be possible to get into the habit to only use the flat handle when approaching a dismount. That way there wouldn't be any confusion.
well, apart from having to run an additional cable to the brake you would have to dismount using a top mount brake instead of the forward lever. Just reverse the brakes and get confused. Cross brakes are weak anyway.