I used this for general purpose water drinking in the office, in the car, etc. It has a great lip on it, which is very drinkable and seals tightly.
Unfortunately, it is not very easy to use on a bike, having to completely remove the entire cap to get to the water. But for casual use around the house or office, it worked fine.
The real reason I have to give this bottle only 3 stars, is that it isn't very resilient - the cap cracked into 5 pieces when it was accidentally dropped from about waist high with water in it when I was walking on the sidewalk.