As for the song in question itself, eh.....I remember it, vaguely. There's only a couple Vai vocal songs I can enjoy, this ain't one of them, even if it's not technically a 'vocal song'. While I can appreciate his personal goals as a guitarist and what he sets out to do for his own goals, they don't always line up with what I want to hear from him. Pretty much everything from '99 up until Inviolate was like that. I was really stoked to listen to that album and it hit me very similarly to how his music did in my teens.
While I generally don't get picky about guitar tones on other people's music, when it's a lead guitar through 90% of the song I do. This is in his zipper phase with the damn Sustainer. There's this top end fizz that sounds like a f*ckin' zipper and it drives me nuts, it's most noticeable when he's playing on the lower strings, especially higher on up the neck. I don't know if that's the way they interacted with the Legacy or not, but it hasn't been an issue since he's been using the Synergy stuff.