Two hoop coops, sharing a wall

[fat brown hen]

I have a cattle panel hoop coop (pics here). I would like to build a second one. Due to space constraints, they would need to be side-by-side, like this shape: nn
Out of frugality and laziness, I might like to have them share the center wall, so they look like this: m

Are there any downsides to having two hoop coops share a sidewall? The main issue I can think of is drainage, but maybe I could place a gutter down the middle.

 

[azygous]

Use more cattle panels over the groove in the proposed center wall to bridge the gap, thus restoring roof drainage towards the outside walls.

 

[Sefirothe]

I would think the one you attach midway up your existing coop (would be shaped like a mirrored r) wouldn’t have the integral structural resilience given by the arch shape.

I would revert to putting two side by side like your n n example.

 

[fat brown hen]

This is what AI generated (I believe this is what @azygous is suggesting)

That got me thinking, what if I just replace one of the hoop coops with a vertical wall? Like, t-posts and cattle panels, standing lengthwise as they are meant to be used. With the same "roof", so it looks like a lean-to. I could not get AI to generate this image, but hopefully my description is clear enough.

Thoughts?