I dont think that there are many players around there, who switched so many styles along the years (and were good at all of them), and i think that he deserves some credit, as a man who brought exotic scales to rock, and as a man who included in his music classical influences, all together with soulful blues licks.. i can talk hours about his abilites ,but to make it short just check out the dp self titled album, the machine head and in rock albums , and also the rainbow stuff...

peace out