memo -
I love this design, it makes so much sense and it is so much easier to cart around in my work bag.
I found the only drawback is that even with the silicon sleeve, you can only carry room temperature water as chilled water condensates and dampens items in your bag so I found I have to wrap a small tea-towel around it if I want to chilled water, which makes it a little expensive compared with other 'brands' on the market that are fully insulated.
Aside from this, I love it, and backed it up by purchasing the A6 for my handbag which is the most perfect size. Its first outing was to the theater this weekend past and it was perfect.