Having done a tour at Eastern Radar which involved much tanking and formation rejoins followed by a tour at CFSACO in Canada where I was fortunate to spend 3 weeks doing their 'quick and dirty' conversion trg from ATC to FC involving braodcast, tactical and close control, IMHO I see no reason why, with adequate trg, Coal Face controllers could not be dual qualified. After all, the bread and butter skills of a good radar director is heading appreciation, planning and the ability to re-plan when it all goes to rats-S*@*.
I wouldn't even mind a tour as an intercept controller myself if the locations were more appealing!!!!
Standing by for incoming rockets - but hey it's a free world. (and about the only thing we ain't taxed on ....yet)