I hated them. I also hated the Chaotica/Captain Proton episodes on Voyager. I’m sure they were fun for the people involved, but I got second hand embarrassment trying to watch them.
I found his raspy, gravely voice unbearable. I can’t stand to hear him sing. I fast forward though it every time.
Ironically, I rather liked his acting and enjoyed his character otherwise— although I think the writers relied a bit too much on his character/the Vegas lounge program schtick, and “Mirror Vic” was an absurdity that should never have existed.