Having been to the stand a number of times before we decided to check out the restaurant space.
Later in the evening on a Sunday night in April when St. Henri is typically rather quiet, the restaurant was a great change of pace. The restaurant was busy but not packed and the communal tables don't feel atypically spacious (no elbow rubbing with strangers :) ). The food is the same as at the stand, high quality but a bit on the expensive side (3 steamed sandwiches, 6 satay, shrimp balls, and a pair of small deserts ran $50... to food is in very small servings could be served from a truck so its a touch pricey).
For desert the Kueh Salat, is a joy and a must have. A gelatinous custard on a bed of sticky coconut rice, it is a wonderful desert and should be had with every meal.
Food was fast, servers were great, and the vibe was wonderful. We will definitely be back.