I'd say anywhere that efficient beating to windward is not a priority the various free standing rigs make a lot of sense. For example reaching between islands in the Caribbean looks like a good fit.
Not having to rely on stays and shrouds to stand up, a well engineered free standing rig should provide considerable peace of mind. Using carbon to minimize the weight of the larger section spar makes sense too but ups the cost, of course.
Nonsuch and Hunter use aluminum, tapered sections and they are large with the attendant windage, Freedom has almost always used CF. Hunter and Freedom offer models with vestigal jibs but headstay tension is always going to be a problem, hence the lack of need to beat efficiently would be a consideration in choosing such a boat.
It is a bit of a mystery why these have not caught on in the mainstream more than they have - but I suspect that most of us spend a fair time beating and so...... Interestingly in the eastern Caribbean we saw very few of these boats there too.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)