Are the Shimano M324 balanced or do they naturally stay on the clipless side?

On my commuter, I have a set of Shimano M515 pedals (equivalent to the M520), with the clip-on reflector adaptors. The clip-on reflector adaptors offer a decent surface for occasional riding with standard shoes, but with them, the pedals tend to stay on the clipless side. It makes the pedals very good for regular clipless riding and occasional riding with city shoes. Also useful when, because of ice concerns, I prefer to ride out of the clips.