Purling the soles of my socks was a trick I picked up in Sensational Knitted Socks
. She makes a passing reference to a Princess Foot, because the V's are on the inside and they're smoother than the purl bumps.
The only tricky bits I had were with figuring out how to do a SSP instead of a SSK (Amy's got a video for it here) and the Kitchener toes... but I'm getting better at that.
They're soooooo comfy to walk on, and I think they look great: