Yup, I bought one yesterday. I was in REI to buy the SynMat UL as I wanted a lighter pad. I _really_ wanted the Downmat UL but REI told me they would nto have them until 4/20, after the 20% off sale. I went to the register with the SynMat but they could not remove the security device. So I drove up to their other local location. Thanks goodness... as they had the Downmat UL! It's 4 ounces more then the SynMat but I liked that it came with the external pump bag (I would have bought that for the SynMat) and the R value is through the roof.
As it has an external pump, is light(er... then my other mat) and has a great R value, it will probably end up being my go to mat I'll take on most every trip. I usualyl take a tarp and soda can stove but I don't mind the extra weight when it comes to my bag and pad if it means comfort.
Exped has done a great job with this pad. It's (fairly) light but still has a great R value. I hate hiking miles above 9000 feet and then having to manually blow up a pad. With the pump bad this is now no problem at all! As I've rad, the pump bag is only 1.4 ounces (I really think it might be less then that). It also can serve as a dry bag if needed. Throw some clothing in it just in case and it serves a dual purpose.
My (terrible) quick inside demo of the pad: