Exactly..... Same thing I would do at a paintball match if I saw a tank with a sticker that said "For SCUBA Use Only".Probably mind my own business
Now if I saw this tank and knew that someone was about to either dive it OR use it for paintball, I'd say something like....... Please don't ever be anywhere near me.......ever.......or please let me know where you will be so that I can make sure to be nowhere near you......ever!