I've been working with Drupal Commerce for the last few months and am hitting a wall trying to load a particular product into a product display page on its initial load.

Let me clarify with an example:

There's 2 Product Display items, A & B and there's 2 products assigned to each Product Display A { P1, P2 }, Product Display B { P3, P4 }

Now, the question is What is the best way to set up Drupal Commerce so that I can create a URL to show Product Display B, Product P4. Something like http://site/products/B/P4 or http://site/products/A#P2