Square Balestron Rig?

I'm aware of the basic compromises involved in square rigged vs. fore-and-aft rigged. What sort of compromises would be unique to making a Balestron with an upper spar to mirror the lower boom, producing a sort of rectangular Balestron?

 

You may have seen this before-as close as I know of to what you describe:

Maltese Falcon:

 

I don't think so? A balestron rig is uses two sails, with one of them being sleeved. The DynaRig is ahead of the mast.

 

I can't think of a rig that more closely fits your description in post #1 than the Falcons rig.....

 

This sounds pretty close to the split junk rig, just without the intermediate battens (boomlets). I suspect that it would be a challenge to achieve sufficient luff tension for a "square balestron" with a yard of reasonable weight.

NB this is not a square rig in the conventional sense as it has a luff and leach that are distinct.