I live in Salt Lake City, Utah, and have attended almost all Utah Symphony Masterworks concerts since February 2001. I attended the three public performances of Mahler's Symphony No. 8 given by the Utah Symphony on February 18-20, 2016, conducted by music director Thierry Fischer, with Markus Werba singing the role of Pater Ecstaticus. In all three performances, as well as on the commercial recording released in November 2017 on the Reference Recordings record label, I found, and find, Mr. Werba to be a thoroughly convincing performer of that role. After the final concert, I briefly talked to Mr. Werba while crossing a street just next to the Salt Lake City Mormon Tabernacle, the venue of the performances and recordings, and at that time he indicated that he had sung the role many times already.
As for Mr. Nézet-Séguin, he is too high-profile (and expensive?) to be a guest conductor of the Utah Symphony, but I tend to favor the analysis of Settembrini somewhat, but phrased differently: the question is often not which conductors are overrated -- aren't they all, at least in some repertoire -- but rather, which conductors are underrated in what repertoire. So, for example, I would say that our current music director, the Swiss conductor Thierry Fischer, is underrated as a conductor of Mahler, although Dan Morgan, a reviewer at musicweb-international.com obviously disagrees, at least based on the two recordings of Mahler the Reference Recordings record label has released, with Thierry Fischer conducting the Utah Symphony.
Sincerely,
Gregory M. Walz