That's what I like so much about Mekong. Usually, brewpubs for a vegetarian means some kind of grilled Portobello sandwich with fries. Which can be good, but monotonous and lazy/lacking creativity.
Whereas at Mekong, you get Vietnamese food (hence decent vegetarian choices) with your world class beer choices. Actually, as you said, you get fantastic Vietnamese food.
The article said the Answer is only serving guest beers at this point. I did have a beer at Mekong that An collaborated with Cigar City on a while ago, and it was great. So I'm hoping that points to the beers at the Answer being consistently great as well. (Unlike a certain DC brewery/brewpub where the beers are hit and miss, helmed by a certain pale, shaggy guy who got his start at another DC beer-centric restaurant).
I haven't gotten over there yet. The food at Mekong was fantastic though.