Well Sedonafest is over so here are my final thoughts on our Tent Cot experience:
It was much much easier to set up/take down with two people. We still had it up and down in about 5 mins, and one clear advantage we had over both a traditional tent and an RTT was that we were able to set up anywhere we wanted. We slept right next to Oak Creek, on the rocks and were lulled asleep by the water every night. Those with traditional tents had to find one of the sandbars to set up, and those with RTT's or in cab sleepers had to stay in the parking lot away from the water.
I think both Josh and I found it comfortable to sleep in with our bags and thermarest, there was lots of room, but the bar down the middle really sucks and keeps you from spreading out. I searched and searched for an air mattress to use, but the inside measurements of the tent cot were always just a few inches too small.
We were able to keep both of our thermarests and bags inside when we folded it up, but just barely and not without some effort. It was a bit of a struggle to get it back into the bag, and after only two trips the bag is starting to show wear and some rips, so I don't think it will last too much longer.
We didn't have Caesar on this trip, but there is probably no way he would be able to sleep in there with us. I'm not sure we could get him up into an RTT, but at least we know he would fit once inside.
I guess my conclusion is if you are a single person who doesn't want to build a sleeping platform in the back of your truck, and wants something easier than a traditional tent a single version of the Tent Cot is the way to go for the price. As for us, we have fallen victim to the shear coolness and convenience of the RTT, so I will be returning the tent cot this weekend.