i was doing a search for pvc/shiny/latex leggings again and while i didn't find what i was after - namely online shops that sell them online and ship to the US, i did stumble across the catwalk queen blog about this years graduate fashion students in the UK.
seems there's alot of silver leggings and pvc ones being used in the year end shows and the middle designer who used semi trans pink latex caught my eye. the full entry can be found here.
so if the students are still embracing it all, then its not going to be a one season flash in the pan and more will start appearing in more accessable places. another site which was tracking the fetish trends in UK fashion did suggest buying latex leggings from one sex shop styled site and pointed out to get alot of talc.