At my brother's house, trying out his setup. He has a table
mounted to his treadmill, with his laptop, a full size
keyboard, and even a mount for a 2nd monitor. It's a little
difficult to walk and type, but part of that is the fact
that this is also a new keyboard for me, and that always
takes a bit of getting used to.

Love the concept though, I could certainly use more
exercise in my daily work-life.