We do take the baby out in the landy now and then, but the baby seat goes on the passenger seat and the missus in the middle.
The instructions for the baby seat said it needs a three point seat belt. Obviously the middle seat has only a lap belt. I'm sure you could secure it better, by bolting down an easyfix base in the middle, but you still fall fail of the gear stick problem.
Our baby is still too small for a forward facing car seat. I did try the baby seat in the middle, but couldn't use 2nd, 4th or reverse because the stick hits the baby seat.
Wheying it up at the time, we decided it was safest to have the baby seat properly mounted on the passenger seat and the missus in the middle.