[...]need a T-adapter on each port + terminators at the ends).
For sure. If you don't have 2 T adaptors and 2 terminators, factor those into your costs. You can't just plug those cables directly in. :-)
But the BNC port works great on the 2065 card. Just set the jumpers, plug it all together, and away ya go. I ran mine like that for a couple years before I finally got rid of my old 10-b-T hub that had a BNC port.