Strumenti Acustici de Precisione no longer exists, but the owner/designer, Vincenzo Fratello, has a new company called DolceVita Audio. It is even harder to find references to that company. A dealer in my Northern Virginia area, Deja Vu Audio, heard the new lineup of speakers in Italy and plans to bring it into his shop when production commences. I don't think there are any horn designs in the new lineup, but, the speakers are probably worth hearing; this particular dealer makes custom horn speakers from vintage and new parts and is very much in tune to the sound of horn-based systems.
The Oris horn, using full-range drivers as mid to upper frequency drivers is a very promising approach. Used that way, many such drivers sound much smoother and natural than as truly full range drivers. I have heard Lowther, AER and Feastrix and cheap Tang Band drivers used this way and the systems sounded quite good.
The only time I heard a full-range driver sound great without any other drivers is the Charney Audio back-loaded horn--a quite amazing system give that it sounds good, looks presentable, does not take up much room and is very reasonably priced. I've heard the Charney with a Voxativ driver and an AER driver (I like the AER more because it sounded smoothly extended in its top range). The Voxativ full range systems (of course using their drivers) sound good too, but I'll still take the Charneys.