Here is a travel case made with Raspberry Pi enthusiasts in mind. The Cooler Master Pi Case 40 has an aluminum/TPU body and gives you full access to all the ports. It is passively cooled, so you won’t have to put up with any noise. The case is VESA mount compatible.
The Pi Case 40 gives you access to the GPIO on the side by removing the flap in the TPU bumper. It is strategically designed to help you route wires outside the case. You can find this project on Kickstarter.