Yep, flaps down, ailerons up. Sometimes called butterfly (JR manuals).
I use this on my 4 servo-wing sailplanes, makes precision landings MUCH easier. I (and most of the guys I know) use only a small amount of up aileron, maybe 1/8", with 90 degrees of flap. I've experimented with more "up" aileron, but my ship came down TOO quick, without as much roll control as I would like. But that's just me