I'm late to the party, of course the nano rocks

nano vs shuffle
- size and weight (more than shuffle) is ok
- lack of lanyard makes me extra sad (gives quick access to operations)
- clickwheel is way senstive but doable
- battery life is a lot worse than the shuffle ("up to" 14 hours advertised but that is probably assuming continuous play and who's gonna do that with that beautiful screen; shuffle is rated 12 hours)
- delicateness, scared as hell to scratch it
- rating songs is cool, there's a bug in the interface (sometimes get stuck on rating screen) but you can overcome it by skipping to a different song, you'd think the ratings help you find great songs but it's realistically better fit to weed out crappy ones
- photos: screen is kinda small, supports folders (but not folders within folders).. a bit useless
- hold button? not much use for that either
- listenin to podcasts again (can't show subscription on Odeo? bah)
- am loving (smart) playlists

iSkin
- the iSkin finally got here, the pouch/case the nano came with was weaks
- mostly good: access to clickwheel a must, exposed ports and hold button
- ice blue (on white) is hot
- good grip, better feel around clickwheel (solves sensitivity issue)
- screen protector
- around the neck the nano definitely feels heavier (the lanyard could also be longer, it hangs like a pendant)
- lanyard attach on a corner, kinda sucky but there are some design issues since the nano exposes two ports at the bottom
- no use for the belt clip really, its stub on the back of the case is annoying
- buy it from Amazon ($20)

Update

cool iSkin video review from Gadget Tv