The Contrail is a bit larger than the Virga, however the TT 1+ designation means that you can fit 2 adults if you have too, not for general use.


As you can see from my shot , two mats fit inside. Now on a clear night with a light breeze it will be a pretty good minimalistic shelter for two .
On a high humidity night, the sides of the bags will wet out because they will touch the walls. So again it can be done but the Squall would be much better.
Franco
Oh dear...
Looking at the picture I remembered that if it is set up correctly you provably will not touch the walls either, but there is a chance that with side rain one bag could get wet from the mesh.
The two Nalgenes (one on top of the other) are 6' away from the entrance. Did that to show the foot room.