Yep, 2mm bass and treble side.
I found that closer than 2mm gives more bite and compression but makes it "fuzzy". 3mm, as FF says, gives it more air and a more acoustic like tone. 2mm, to me, is the perfect balance of bite and clarity.
I have my Riff Raff'd SG set around 1.5mm all round as that gives a more Angus-like tone. I personally prefer 2mm though.