According to my mum, I had precisely one bottle, she left me with her sister when I was about 10mths old so she could go to a wedding, she didn't make sure I knew how to take a bottle, I guess she just figured it was one night only and I'd survive even if I refused.
All my kids have ended up having bottles at some point, but only my first when I was working was still having them at 10mths.
DD1 took a bottle for 1 day only when I went to a day long conference when she was 4mths, she never took one again and it certainly never worried me that if something unexpected happens this could cause a problem.
DD2 is 7.5mths, she hasn't had a bottle in about 3mths, again I have no concerns about this, I don't suppose it would be fun for whoever was caring for her if there were an emergency and we were apart, but it doesn't seem worth pumping and giving her bottles to practice for a scenario that may never arise.
I have now started offering a sippy, though it's the kind without a valve that just has a spout with a slit in it, the water pours out just at a more controlable rate than an open cup, it gives her practice without me having to be right there holding it, if it does end up on the floor, it dribbles rather than gets water everywhere!
Even sippies without valves can still require suction, if the holes are too small, my understanding is that it's best for palate development to avoid this.