Well, I dropped by this place yesterday. It's on M Street sort of next to Rhino Bar, and they just opened last week. They have a basic crepe menu with a couple of interesting combinations, including the one I tried, the "Bachan" which includes curried potatoes and peas, "cilantro" (a bizarrely small amount), tamarind sauce and cilantro sauce. (There was also supposed to be "crispy noodles" inside according to the menu, but I saw no sign of any.) It is kind of a cool idea, though the execution was not amazing. The potatoes had a nice flavor, but nothing really popped about it. They also didn't heat up the crepe long enough to warm the filling. This happens to be my pet peeve with crepe places here in DC; they all seem to be in such a rush, they don't prepare a crepe correctly. (And I was the only customer, so there was no need to rush.)
The place is reasonably priced I guess (all the savory crepes were between $6 and $7.50), and they also have a full menu of espresso drinks. There are a couple tables in there if you want to sit. I tried to take my crepe to go, and they wanted to give it to me in a styrofoam box - again, another pet peeve; I prefer to take a folded crepe in my hands and eat it as I walk along. They did accommodate my request, which was nice.
I would say overall, Snap Crepe offers a better crepe in Georgetown, and also has a more extensive set of filling options.