From a certain year (99 or 2000 I believe) the standard pipes were stamped Termignonis.
They are just plain standard road legal cans and I would not think you would gain anything with them or that they would sound in any way nice(r).
One thing though, they are slightly bigger in diameter and you would need to buy special clamps & rubber for them at around £50 from Ducati.
In France - road legal Carbon Fiber termis seem to be quite popular ... well I have seen them a lot on magazines but I have got to say that the bikers in the street seems to stick with the much more sensible option of 50mm straight through or some full race systems!!
oh and France is a country where bikes are supposed to be restricted to 106bhp... yeah right!