I had a scratch-built (by my Father) sport type airplane with a fairly drastically swept hinge line on the vertical fin and it definitely had some effect on the pitch of the model. Took me a few flights to figure out why in the world the airplane wanted to pitch up on take-off but otherwise was perfectly trimmed. It was, of course, because I was holding a substantial amount of right rudder during the take off roll. The airplane was a .40 size tail dragger, mid-wing, with a semi-symmetrical section in case that information interests anyone. Never did take pictures of it unfortunately.