Yes, I've been using a 7 as my main guitar for everything since 97. In the same since that a bassist uses a 5-string, using a 7-string guitar works out great for cover bands since you have a variety of tunings to cover. In my current cover bands, the 7 is played about 80% of the night. It covers all the standard tunings. I do bring a 6-string, but it's only used for Drop D.