A full height or high profile bar is mainly a fire/EMS product. There are other applications, but high profile bars generally need to take hold in the fire EMS areas to work. The fire/EMS apparatus builder market for lights is a very different animal from end user, amber and LE markets. Many depts don't specify brand, and a major builder of apparatus can have a contract or unofficial go-to for stock light options. When building for the fire or EMS specific platform, a bar is the worst idea from a risk standpoint. Many trucks are setup with just 7x3, 6x4 and 9x7 lights and bars are starting to fade away in many applications, or go low profile even on full sized trucks. Also, a bar has a lot less cross usage in other markets than a lighthead. When any major company introduces a new lightbar that is high profile, they take a huge, probably unacceptable risk at this point. The Federal Signal and Whelen are only adding to high profile bars with LED rotator technology, even that isn't an easy sell. In order for any company to risk a full profile lightbar, there needs to be extreme adaptability and cross-platform applications or it will not be a worthwhile product for the company.
That said, Feniex has convinced me they will adapt when ever possible. Perhaps their current tech could be adapted into a double height lightbar housing efficiently enough to make a high profile bar worth making. Time, and hopefully this section of eLightbars, will tell.
-Disclaimer- I don't speak for Feniex, but I do follow them on elb.
