What are the advantages/disadvantages of having a poly perimeter? I know they are supposedly easier for cleanup but what about as far as detectability/feel/etc? Also my first piece is a swiss front with french lace back. I ordered a new piece the day before John's announcement about the new lace so I guess my new piece is going to be the old swiss lace. I ordered all swiss this time, does anyone think all swiss is that much of a difference as far as feel? Like if I touch the back of the piece I am wearing I can feel where it meets my growing hair, wondering if that goes away with all swiss.