A simple fold and snap leather pouch, that was part of a pouch and case set, is my go to for dress occasions. Problem with it though is that peices of tobacco find their way out. I have a Castleford zipper pouch, and an old pigskin Mastercraft pouch. Each have undesireable aspects, are impossible clean, and ultimately my tobacco would dry out in a matter of hours, the best pouch I ever owned was a plaid fabric roll-up, which kept an ounce of tobacco reasonably fresh for a day, but of course, I had tie a shoestring around it to keep it from unraveling.
These days I just use a small tin if I need a pocket carry, otherwise, I just take my pipe bag with a few tins or zip lock bags.