These bottles seem to be as much about a fashion statement as they do carrying liquid! That said, if you are going to carry a drink, and don't want or need a vacuum flask they do look nice and give you a wide range of styles to choose from.
I have the plain white design and think it looks great. Aluminium bottle, screw in cap. Does the job, you can put it in the fridge of course and chill the bottle itself so it does keep your drink cool a while longer.
Bit expensive for an aluminium bottle, you do pay for the style and name.
Only advice I would give is that if you ever intend to put ice in this with your drink, get the wide neck version. This one is narrow, which is pretty decent to drink out of, but too narrow for ice cubes.