on the Sith side it makes sense that there are no Force Users for non-force chars (Sith are the top rung of the Empire ladder everyone else is on the bottom) and as for jedi they usually lead non-force (example from the modern era General Obi-Won, General Yoda) and in this time of the Old Republic the jedi are more of side line to the republic as alot in the republic blame the Jedi for Corscent.
Now as to Force Sensitives on the sith side any Force Sensitive that does not go to the Academy are killed (it is the law) on the Republic side Force sensitives (not Force Users) can be any where and do all kinds of things so that would be a possiblility