There is an interesting article in Packagerepublic.com that gives good marks for the usability of aluminum bottles vs. aluminum cans.
According to the article, “”Aluminum cans, aside from being cool packages (largely attributable to the opening crack), are notoriously poor in usability. They also are not reclosable and they do not pour well. The lip contact area is anything but suitable for lip contact. In comparison to aluminum cans, this aluminum bottle provides better usability in almost all areas. While it did not open easily, it pours better, and it recloses. It has a well defined and rounded lip contact area. As a drink-from package, it does better than an aluminum can.”
The reuse factor is also something that is probably being studied. No doubt these bottles – because they are reclosable – are used to store other liquids once the original contents are consumed.