I have had my WiBE now for 2 or 3 months.
It is amazing, I am on the road a lot and in all but the remotest areas it picks up a strong 3G signal.
It was not difficult to set up, and works with the sim card from my vodafone monthly contract dongle, though I also have an O2 and 3 sim just incase.
As many hotels offer wifi that is either only available in public areas, or does not work at all, the WiBE is a lifesaver.
I have a 3 pin power inverter for my car, so I can also use it on the road.
If you are worried about the investment, it does not work everywhere, it has to be able to find a 3G signal, and there are places where it does not work.
However I get fast solid connections where my USB dongle shows no service and where I am not able to make phone calls.
So, I would recommend giving it a go.