We were so beguiled by AD's bamboo-bound smartphone that we had to track down the designer to get some hands-on time with these work-in-progress prototypes. We met up with Kieron-Scott Woodhouse (pun unintended) and he offered to bring along several of the latest prototypes for us to get to grips with. While the finished product will arrive in the lighter bamboo finish, the darker model's button layout is closer to what we can expect on the final device. The ADZero is still set to launch between the end of 2012 and the start of 2013. Sustainable smartphone fans can browse through our gallery below, or