all my bikes have flat bars. two MTBs and four road bikes. if you buy friction thumbie type shifters they should work with just about any derailleur, i think. i use BMX brake levers with both single pivot calipers and cantis. a stem that is three to four centimeters longer than normal puts me in about the same position.

i also run with an inch or two more drop, which puts me about half way between my "on the tops" position and my "in the drops" position.