I ordered this bottle for my wife, and she has been using it (a lot!) for the past several days.
First, she did say it would be nice if there was a flip-lid possibility for being on the run, and she would like to be able to hold more water. That being said, she actually has no complaints! She loves the ease of use of the sleeve, the feel of the bottle, and use of the strap on the lid. All around, she loves it!