Hi William
I know exactly what you are saying about the popularity of these line array or whatever you want to call these vertical columns, but for me it was not a fad, I build a lot of cabs, and always use a minimum of a bi amped rig at all my gigs, the problem at the type of venue that the Maui is ideally intended for in my opinion ( restaurants) is that conventional rigs look ugly and often sound rotten, and the people are often there to eat and not listen to a singer. I can only liken the sound of a good pa set really low to driving a Porsche everywhere at ten miles an hour, imho people sitting by a sub with a 15 and 2 mid top, on top get an ear bashing whilst those on the back hear nothing. So a few years ago I built a column pa and it sounded better at lower volume and did throw better than a conventional rig, so it was just a matter of time for me that I would splash the cash and buy a proper version. I wouldn't dare do a big gig with my single Maui, I think it would suffer, but I am really happy with it in a 70 seat restaurant or average bar, which here I Spain is the size of a double garage. So it's horses for courses I guess.
Cheers
Kev