Freemie? Breast pump?

Has anyone heard of the Freemie breast pump. I'm a teacher and I will be having my baby in May. In August when I return to work I want to be able to pump . I already have the medela pump in style, covered by insurance. The Freemie pump seems better for my job and time management. Seems like it's basically the same process. Will I still need to  go to another room to pump or can I pump while teaching. The video is a little misleading.