I find it hilarious that someone would put a water bottle in their middle jersey pocket, which is absolutely the most uncomfortable thing I can imagine, before they would wear a camelbak. I personally don't wear a camelbak, because most of my routes have easy water stops, but I wouldn't hesitate putting one on if needed. 100 degree heat is no joke, and there's no use putting yourself in danger or making things hard on yourself just because some ocd folks think wearing water on your back, as opposed to putting it on your bike, is that big of a difference.