EP is a little stiff, polar hair (coarse not the Super fine stuff). Material is a lot more mobile and has some taper to it, where EP is same diameter. For salt water it works, for fresh water you have to tie hollow technique to get the most out of EP, and sparse.
Nice ties!
Get a velcro patch to comb out and form EP. Comb out your dubbing loop before you wind it on. Good rule of thumb for eP is to use half or 1/3 of what you actually think you need.
I would personally omit ep from patterns like intruder, it's is better used for over wing streamers.