And honestly, I could argue that some of my uniqueness comes from the fact that I've never tried to learn what anyone else was doing, thereby never contaminating my creativity subliminally with someone else's ideas (that's just my opinion, mind you... could be irrelevant). But seriously... ever heard Chopin or Beethoven do covers?
I think it really depends on the individual. Everyone's different. For me... I feel I have been *influenced* by a lot of people throughout my years of playing, but have just never sat down to try and figure one of their songs out, or figure out what they were doing and how they did it. I base the foundation of my skill and knowledge on a book of scales I had when I was younger. I learned all the scales in that book, and the rest, as they say, is history.
HOWEVER... I am not in a band (being that it's difficult to call one's solo efforts a "band"). If I was in a band,
especially one just starting out (assuming that previously created material was not brought into the band by one of its members), then I think it could be important to learn a few covers... most importantly being ones in the same genre as the band itself, but others also... a couple songs of varying styles to help the band members develop the skill set required to function harmoniously as a single unit. Could be fun as well, maybe?
~Robert