Would you believe it... it works! After following the instuctions to the letter and realising I needed slightly more patience that I was giving in the initial channel scanning, all went well and I can now watch all of the channels I get on my PC with the supplied Happauge software on my PB using iTele and MSplayer.
I haven't tested the functionality of the software yet (i.e. recording) but I have inadvertantly tested the live pause function... accidentally clipped the space bar on my way out and came back thinking the program had frozen - but on hitting the space bar again, the program resumed from the place I had left - very nice! With that in mind I can confidentally presume that the video side of things works a treat too.
Obviously what you do miss out on is an all encompassing frontend - a viewer and channel list with all of the relative buttons and options you get from that. Using the iTele and MSplayer gives you at least two windows to flip between, but seeing as its free, thats a minor point.
Picture quality (with it being digital) is as good as it can get being shown on a laptop screen/TFT, and with the PB having a smaller screen than my PC it looks even better! And with it being mpeg2 theres no loss in quality when it gets recorded.
Sigamy I can definately say the Nova-T is European and Australian only. There is a new model for the states called the WinTV-HD but it doesn't seem that is supported by the drivers on that link you provided. But if the results I've had are anything to go by it may well be worth getting the US products (FusionHDTV) and giving it a go. Don't know how much they cost, but its got to be cheaper than the EyeTV range. If you've got any more questions about the Nova-T on a Mac let me know and I'll try to answer them!