Actually, the spoilerons appear to be modeled quite well. They deploy at lower speeds and retract as speed increases after about 200 knots. If you try to deploy them at higher speeds F8 key deploys them but they immediately retract.
In unusual attitudes (or aerobatics, think dog fighting), they deploy to retard high angle of attack stalling. Unlike the real F-100C, both sides do not fail to deploy/retract together. This was a real problem which did cause serious and fatal incidents. Probably the reason the F-100D did get flaps.