Mine arrived today and here's my verdict:
This is a high quality cable and supports audio on all iPods.
I own an iPod touch - and it doesn't support video on that model. This is not the cable manufacturers fault - but the product desc. should be updated on this site.
The product description should say that this cable only supports video on the following iPod models (from the cable docs):
iPod with colour display 20GB, 30GB - U2 Special edition
iPod with colour display 40GB, 60GB
The video quality is great (I have tried it on my freinds iPod video) - but if audio is all you need then this is still a bargain for 8 quid.
I hope this helps sort out any confusion !