Voted, it seems like a good idea for those with one eye or for anyone seeking more performance.
Separately there was an interesting post recently with a link to Unreal engine documentation which suggested a practice of switching to monoscopic rendering beyond a certain distance, as your eyes cannot tell the difference anyway and could potentially gain a lot of performance - so maybe there could be 3 modes: Full stereoscopic, full monoscopic, and a hybrid mode where everything beyond X distance (outside the cockpit?) is monoscopic?