I got the OAO signal when I was on my short hose - went to donate the short hose (in my mouth) and realised those extra couple of seconds could be the difference between ok and panic for a stressed diver
No offense but that's a training/experience issue not a gear issue. You're thinking of changing your gear because YOU made a mistake, not your gear. You should have been taught to only donate the long hose, so if you knowingly donated the short hose you weren't taught appropriately. If you accidentally grabbed the short hose, well that's a mistake likely based on inexperience. A quality sidemount instructor would have sorted out donating before your first day. I know mine drilled it in our heads over and over and over. You should have had this sorted out before starting a cave class or your instructor should have sorted it out early in the class. Though if it was simply just a mistake, well mistakes happen and you should learn to react appropriately without thinking as opposed to changing gear.