I just transformed my desk to a standing desk in my office and I am enjoying it. I did buy a 30″ metal stool with no back from Target for $27 that will allow me to sit with good posture when I need a break. While standing I usually place my foot on bottom rails of the stool or a small box I found in my office and I will use this to loosen my hips.

That Locus Desk seems neat however to rich for me. I am rather interested in that mogo chair however that does seem like something I would use.