personally, i feel it's slow only initially. once the thumbnails are built and you've viewed the images, it's pretty quick. sure the iPod may display their images quicker - but you will take 10x longer to download then view on a tiny screen. ipod is great for .mp3. the new video one is not too bad for video, once you take the time to convert the content to iPod compatible mp4 format. but the screen is tiny compared to the p2000 (or even PSP for that matter). i've got video conversion down pat for the p2k - i can easily rip dvds from pc or mac into .mp4 which are playable on the unit. for pc, i use dvd2avi and virtualdub. for mac i use mactheripper and ffmpegx.
again for offloading photos from your 2 cards so you can continue shooting - and verify that the photos are stored - plus look at histogram,, etc.) the wins hands down over the iPod. for quick viewing of photos, listening to music, and ease of viewing movies (although small), the iPod is great.