I've got the DVB-T card (this one IS dual tuner) and DVB-S playing happilly together, albeit the T crashes and drops the tuner on a regular basis, but this was expected from what others have reported.
The S is pretty stable, but of course with only the single tuner I would like the get the T a bit more stable.
My biggest worry is the EPG from the S card. It's bizzare, in the guide part it shows a full weeks data, but the programs are wrong. It shows the right line up, in the right order, but at the wrong times. Say it's 9.30pm the guide shows 9.30pm as the current time, but shows "StickyTV" as the current program for TV3 instead of Boston Legal (which Rocks! Denny Crane).
To further complicate matters, if I watch live TV and scroll up and down throw the mini guide thing, it is correct.
Fiji Rocks! I should have moved long ago. I can't wait for when NZ gets the same climiate, it's been a long time comming - bring on the HDTV