Of course, a Classico (along with the Steinberger uprights and the rest) are just different, electric instruments alongside their acoustic cousins.
As regards viola, my next door neighbor is a fire-breathing country fiddler who regularly uses a viola and a viola strung to sound like a cello. He uses these two from time to time for his session calls (his regular fiddle is a five-string, low c-g-d-a-e) either for that lower timbre or if he stacks parts (no harmonizer for him!). He really dislikes the solid-body fiddles (ZETA et al). He'll use fairly boxy acoustic fiddles with electric bridges on live dates. For recording, he'll use his symphony grade violins recorded in good, small rooms, thru a C414 AKG with just a dash of reverb. He really prefers these terrific sounding acoustic violins thru a good mike than anything else.
And of course lots of guys slap upright here in town, but usually vintage Kays or similar plywood instruments.
Jim's favorite of the old-time country fiddlers was Dale Potter, all over lots of old country records, as well as Johnny Gimble, the master of Texas Swing. Jim's no slouch himself, utterly jaw-dropping to watch and hear him play triple stops IN TUNE.
I'm hopeless with an upright, don't mind the fingering but I can never get comfortable standing behind that big sonofagun.
J o e y