Yogi, I'm not sure if you realize it or not(or really care), but Glen did have one chart hit with Styx, "Love Is The Ritual" did make a really minor dent in the Hot 100, I think it was like #83, or somewhere around there..
"Love At First Sight" made the Top 40, but I know it doesn't count if he didn't do lead vocal, since he's had a hand in writing, but not singing, a few bigger hits.
I dug his stuff on "Cyclorama", but I just can't really get into his stuff on "EOTC".. "LITR" is alright, but it still seems kind of empty to me..
To me, his tracks on "EOTC" seem like an attempt to put Styx in the hair metal direction(Poison, Warrant)..
As for his stuff on "Cyclorama", I'm actually tempted to say that I enjoy his two contributions as much, if not more, than "most" of the stuff Tommy did for it.