John,
I've been using TarpTent's and SMD shelters since 2006, mostly in the humid midwest, and I've never actually had condensation drip on me. When there has been condensation, it runs down the silnylon walls, hits the mesh, and then wicks down to the ground. No big deal at all.
Also, I get much less condensation in them than I got under the rainfly of my old double wall tent because they breathe so much better (all the mesh). When I use them, I have them wide open unless it's raining, just like below. This was just this past Saturday night in MN right off the St. Croix river. Humidity was super high because it rained most of the night. I had to close up the vestibules around 1am or so. Completely closed up and 40 degrees with rain, and I didn't have any condensation at all. Granted it was just me, and it was breezy, but there still wasn't any there. If it did ever drip on me, my WM bag has a great DWR finish, water beads up and runs right off.
