I'm of the opinion that most of the negative comments about Vitos comes from the newer horns, such as the ones mentioned above, rather than the very old Kenosha horns. That being said, I don't know of anyone that's done an in-depth review of, say, a 1950's Kenosha horn. I'm relatively sure that they were positioned as the low-end model, though.
I've seen a few models of Kenosha horns. There was one that had the "Vito" name on the bell filled out in silver "wire," like the "Buescher 400" on the Buescher "Top Hat" horns. That kind of made me pause and think, "Maybe these weren't that bad ..." Sounds like a project to research!