I've been recommended the Atera Strada DL 3 or Genio Pro for this.
The DL3 seems to give the most door clearance, and I've seen youtube videos of it working with a tailgate T5, but it doesn't look like there's enough clearance to open barn doors. And if you could, I'm not sure you could step over 2 bikes to get access to the back of the van, which is the whole point.
Has anyone had experience of this, or seen alternative solutions?
(I've got a Fiamma 2-bike door fitted rack at the moment, but it won't take two modern wide-fork MTBs)