When we were a "blues" band right around when SRV made blues cool again, we covered 'Work Song' ala Butterfield.
I have a tenuous connection to Butterfield. Years ago I bough a well worn 63 Strat from a guy. After the money changed hands (not much back then) he told me "oh by the way, Butterfield borrowed and used that guitar for a 'back half' gig at a local blues club". Hmm. Since he told me after the sale happened I sort of think it may be true. If he had told me before, trying to pump the guitar up, I'd have discounted it as bullshit.
Either way, it doesn't make the guitar any cooler, or me, any cooler. Just a story.