All of the spoilers on the A306 were fbw. The A310 and A306 were a good test bed for Airbus to prove the EFIS, Ecam and a fuel cg system which was carried through to the later generations of their product but Airbus lost interest in the A306 when the A330 came along.
Airbus did look at a short body version of the A330 to replace the A306 but it never was more than a study I believe.
The aircraft was conventional to fly but was technically complex and could be a nightmare in the sim.