We used to have one conference assigning 3-man for F/JV DH's, which was an excellent learning ground for many who are now doing 3-man for varsity in our area (V is all 3-man/woman/person/human). The superintendents axed it against the advice of their AD's. Now, unless a guy gets what he needs from summer camps or from the various off-season scrimmages, he ain't never gonna get to the V level.

There are two prominent, large-school conferences who also cut back to 2-man for F/JV DH's, but several of us always bring in a third--splitting the two checks three ways. Though this sets a bad precedent, giving the schools something they don't pay for, we're hoping they are able to contrast the outcome of the 2-man games with those done by the freebie 3-man crews.
We don't give 'em chronic ballwatchers, only good, young, up-and-coming officials already doing varsity 3-man.
Time will tell if our sales pitch pays off.
The Referee mag article states the case quite well. Should be sent to all AD's and their budgetary-conscious supers.