I was curious on how much a eq pedal effects the sound of the guitar and if its really needed for a show.
It's not absolutely necessary, but it's a very useful thing to have. I would strongly recommend one (although I'd be nice to see your setup first, as there might be other things more useful for you)
it can be used as a boost (as it is used in RATM Bulls on parade solo)
It could come in handy in a show if you boosted the mids on it and stepped on it during a solo. You would cut through very nicely with that mid boost.