I like Aux Vivres, but I think it needs to challenge itself a bit and improve it's food. Vegan food does not have to be just "good for vegan food".
Having lived in Portland, Oregon, I've had some amazing meals in vegan restaurants. I understand that the vegan culture in Portland is way more prevalent leading to more competition and therefore leading to restaurants having to challenge themselves and make the best tasting and more creative options on their menus. I think what Aux Vivres lacks is that healthy competition in the city.
I had the Aux Vivres burger for my main. The patty itself was good, although the consistency was a bit dry and crumbly. the potato wedges it came with lacked taste and were not prepared properly. they were not crispy at all. I only ate three.
The dessert I had was the Chipotle brownie and it was definitely delicious!
So, quick conclusion: great try, first of its kind in Montreal, obviously there is a large market for this kind of restaurant considering how there are consistently line-ups to get a table.
Perhaps a little bit of competition in the city would make them "up" their game a bit.