I guess the lack of response is telling you the BBs probably quite good, obviously there's not a lot of people had problems.
I have Veloce PT, but havnt done anywhere near that mileage, which at 7000 miles, is very good IMO.
Its a funny thing. At the end of the day, the bearings are pretty much the same as bearings used in industrial applications which run at hundreds of RPM more than you do on a bike, for far far longer than you do on a bike. But i guess the irregular forces going through a bearing on a bike are what shortens their lives.