I tried it because it is right next to a popular lunch spot for me, Los Dos Hermanos...love their street tacos.
Anyway, I tried the Holy Grill, and the food was ok. I don't even remember what I got there anymore, but I remember not being impressed at all... It wasn't bad by any means...but there wasn't really anything to bring me back. The food was fine, the price wasn't anything great...
I dunno, with a newer place, you gotta have some sort of hook I think. Do one thing better than anyone else, start out with good prices, something...it was a total meh.
Again, this was just my one experience, but based on that, I don't know that I'd choose it over anything else in that area.