No tattoo artist can ever be everyone's answer to anything; they all have their own preferred styles / what they are exceptional at, so different tattoo's are likely to require different artists, even on the same person (I currently have 3 separate artists work on me). For me personally though, a friendly, open, chilled and easy going person is always a plus. Spending hours with somebody who you cannot even carry on small talk with is torture; more so than the needles
Luckily the artist I'm busy with for sleeve has added bonus of "read like a book". I showed him one image yesterday, and a quote about the character, and he immediately started mentioning additional elements that were in my head but I hadn't mentioned yet. It's awesome when you're on the same wavelength

Friday cannot come quickly enough!