Also, I have one of the early Evocs and it's really bad, the straps do not tighten by pulling, they got some bizarre system in there that basically is the opposite of "quick adjust", which I find a big negative for a bladder, since the size and fit changes significantly based on whether the bladder is full, half full, or empty. If the hose comes loose, which happens occasionally-not frequent, but not unheard of-it SNAGS stuff quick and it's bad situation to have something hanging down into the machinery from your waist IME. Phone storage is a bit frustrating. It's not the most horrible thing ever, but it just has some negatives. I won a bontrager bottle-based hip pack recently and it basically has none of the negatives...
Another plus for bottles is you can add mix easier and keep the bottle clean easier. So if it's hot and you need some electrolyte mix or want some energy mix, much easier to do this with bottles and if you have a bottle on your bike, you can "rotate them" out too, put the empty one where you want it, in the hip pack or on the bike, etc.