if you have 32h on your 700c wheel, 3x gives the best angle.
2x is for 28h to 20h 700c or 32h 20" wheels.
or if you're using something like a powertap with 60mm deep 700c rims.
It's not that you can't do it, but it's about as clumsy looking as radial lacing on a 32h wheel.
radial 32 spoke is blasphemy and should be posted only in the jackass thread.