I haven't been to the Baltimore location, but I hear they are very popular, and they get some serious love in the dr.com thread on Pies.
Here's what "thelistareyouonit" has to say about them:
DDP will be stocked with a variety of different kinds of pie, sweet choices, like, coconut chess pie and mobtown brown pie (pecan Pie with Swiss Chocolate and caramel), savory selections like chicken pie and hot rod pie (layers of roasted potatoes, cream, cheeses, onions, and bacon, ham, crab, or vegetarian) and a variety of quiches. All pies are 100% handmade with only fresh ingredients, without any dyes or preservatives. Fruit is never frozen or canned. Crusts are all made by hand, with no machines and rolled out with rolling pins.