Thinking of getting a Goyard St. Louis..

No, they do not have Goyard in Milan or Venice.. I normally use the small pouch to keep my handphone or my keys. The pouch is quite big, at least 18 cm in width (by estimate)
 
The pouch is actually really functional. I keep everything from phone, to keys to money in it. If I'm using it for a vacation or for airport travel, I like to keep my money in it because it is attached to the bag:P

You should definitely invest in a St. Louis! It's a very versatile bag.