Vai just has a tone and a technique and sound that just doesnt sit in a blues based context well - it's all too Zappa-esque
I rather liked some of the songs on Slip of the tongue - (Sailing ships, judgement day, now you're gone) & a few were similar to previous Whitesnake stuff - cheap and nasty etc
There were some interesting moments like wings of the storm which was epic in some ways
The remake of foll for your loving is best overlooked - VAi's tone was just so wrong and the solo swamped the song. A million miles away from the Hammond organ driven original- no soul!
I just would love to hear that album played by guys with Les pauls (apart from the clean or acoustic bits) , no floyds and a bit of feel and restraint.
Good heavy rock stuff!