I've had little or no condensation with my Squall 2, even in extended rain and fog on the Oregon or Washington coast. As mentioned above, the "2" model has a wider top so more headroom, and therefore more ventilation. I have more condensation with my GG Squall Classic (based on the original Tarptent Squall) which has a lower ceiling. (I use the Squall Classic for longer trips and the larger, heavier Squall 2 for overnights or for going out with dog and grandchild.)
If you want a single-wall tent, you'll need to choose between airiness (or draftiness, if you prefer) and condensation. I personally get claustrophobic in a double-wall tent and love the openness of both my Squalls. I'd also much rather have the condensation where I can easily wipe it off instead of between the tent inner and tent fly where I can't reach it! But that's me--YMMV!
Depending, of course, on the hiking partner, you may want to suggest they bring their own shelter if they can't stand yours (let them carry the bomber car camping tent). Of course if the partner is your SO, that's definitely not a good idea!
I also would suggest taking a look at Henry Shires' new StratoSpire 2 or his Scarp 2. Both are double-wall tents, but the Scarp 2 is 4 season while the lighter StratoSpire is 2.5-3 season. If you get one, be sure to test it out with two of you inside while there is still opportunity to send it back. You might even want to order both and send back the one you don't want to keep.
Another possibility is Tarptent's Rainshadow, a 3-person version of the Squall 2. It will be a lot roomier for 2, so far less chance of rubbing the sides, and less condensation. With one adult and two kids, it has come through foggy, drizzly coastal nights without condensation. You'll still have the draft problem, though.