I haven't used Pookilious' nylon headbands - but have made (and used) the panythose type nylon ones. I used TessieLou's tut on sewing them to make them interchangable. Honestly, I thought I would hate them becuase they would snag too easily - but I ended up loving them. I used them daily with my twins from the time they were born until they started pulling things off their heads.
They didn't snag anywhere near as much as I expected - and I liked them because they fit my girls teeny tiny heads well.
Anyway, just thought I'd give you my review of the nylons.