I'm right-handed and I don't have a marked preference turning either way, but (in my very limited experience) doing aeros I prefer rolling to the left - and I don't think this is entirely because the sighting device is on the left wing strut. Maybe it's because pushing the stick from right to left across my body is more natural than pulling the stick away to the right, but I naturally tend to look to the left first.
There's bound to be something brainular about it.