Well since the Hiro & Aiko's legs (using the foot sock morph) can be colored/textured to look like boots, they still need a sole. What if someone modeled a sole that is parented to/and can bend with, the foot? You could have thick or thin soles, soles with or without heels, perhaps even a buckle or two. No more poke through, no more turning parts invisible, no more meshes bending in weird ways or tearing. And its light on your system resources.

hmmm,you may have something there :0)