Oddly, the reason I started doing single sided is not because I'm a bass player - if you ever see my bass, it is my asymmetrical "traditional" that I do on ukulele. I started doing single sided years ago, specifically because it wasn't something you could find "off the rack", at the time. Statistically, my client ratio that orders single sided is WAY different than this poll would suggest.
Point for the traditionalists - I've seen comments about "traditional" and "symmetrical". If you closely at the "traditional" headstock, it's not symmetrical, on purpose.
At this point in the game, it's 20:1. Note: I put images specifically because those are the two headstocks I do now, and want to get a feel for preference for those headstocks. I realize in the big scope of things, everything below the nut is what really matters to players, but that doesn't mean the overall "look" doesnt' come into play. Plus there are advantages of the single sided, not mentioned here (but mentioned in the lounge), which is why I posted here, and not there (thanks Mivo!). I don't want to functionally swing the vote, although I may have just now.