Finally made it to G Sandwich, next to Kapnos. Heady sandwich competition in those few blocks, with Fast Gourmet across the street, Taylor down a couple blocks, and Blind Dog Cafe nearby. I ordered the goat, served with lemon potatoes, oregano, and harissa. $13 pre-tax.
The bread was exceptionally good. I will go back just to order more sandwiches on that bread. Sesame-flected, great chew and crunch. The goat was very tasty, especially the crispy bits, though I thought it did get a little gamey in the too-large chunks. All the components of the sandwich were good, but they were not quite on balance for a harmonious product. It needed more oregano, a little more spice, as the lemony potatoes really dominated.
I will definitely try again. Note this place is not open on weekend evenings, since it repurposes the space for a "tasting menu". It's open for lunch every day I believe.