Yes, I understand you heard them once at a show. As has been reiterated on WBF many times, a bad show performance is not necessarily representative. I know Klipsch speakers, having had a pair of La Scalas in college. They rocked the house (literally). I have rarely heard a more effortless speaker at high volumes for rock music. They weren’t subtle or great at low levels (could have been the crap amp I had to play with at that time).
It is well known (by everyone except Klipsch engineers apparently) that the Klipschorn, Belle Klipsch and La Scala all use the same undersized mid horn that doesn’t match well with the woofer. They switched from exponential horns to Tractrix (something Klipsch itself uses in newer designs) and use a very good BMS driver (big improvement over the Klipsch mid). The folded bass horn is of course straight up Klipsch but why mess with success (one of my favorite all time speakers, the JBL Hartsfield also uses a folded front loaded horn).
Would I take restored Hartsfields over a new pair of Voltis? Probably, because the old JBL drivers and horns were some of the best ever made but for someone looking for a new pair and not vintage in a good setup I see a redesigned Belle Klipsch as having real potential.