Just seeing if anyone has tried yet

Going out for a rip today with a buddy. My 2013 800 50" is in need of a new belt but unfortunately i missed the dealership yesterday. The guy im going with has a 2015 900s and he keeps a spare belt with him. So here is my question
Has anybody ever try a 900s belt on their 800 50" machine? I currently am running a 800s belt on mine. The 800s and 800 belts are different for sure and it seems to work fine. Just dont want to get stranded today.