Used to wear Radio Shack PRO-40s until I got my hands on the Labtecs.
(latter having the advantage of the boom mike, so one can free both
hands for manipulating the equipment)

I have used a foot switch for years -- frees both hands for computer work
and even pencil - paper work.

Leaves one foot for QLF -- hi hi See URL:
http://users.sisna.com/mbignell/qlf.html