This is a interesting concept of sit and stand workstation by Herman Miller. I recently moved into full time independent consulting and have been looking for work desk for my home office. I have been using Stand-up Station and a separate sitting desk at my work place for well over an year. But this combine the two into one. Of course there are simple ways to convert your standard sitting desk into stand up station, like by putting a box or bunch of books on the table to raise the laptop to standing height.
It is a good idea, I know that because I work at a desk most of my day, yet I need to stand up occasionally. I am lucky compared to most people because I am an owner of the company, so I stand up when ever I am topping to think I even take it a step further by actually intentionally getting up and walking around my office. Unfortunately many bosses do not see or understand the need to allow their people time to think so they tie them to a desk for eight hours or more everyday, this could be a godsend idea for the health and welling being of many office workers, though the only ones that will actually go out and get their staff these desks are the same people that will let them get up and walk around so they can actually think.