"Other than a few minor nitpicks"
That would be a nope. Gadfly doesn't meet my needs and seems to have stalled in development, so I use Matplotlib via PyPlot, but Matplotlib is a bit maddening to work with. I heavily considered attempting my own plotting library during grad school but couldn't find the time for it :/
(Although I will say that Convex.jl makes up for all the pain of not having a good plotting library...)