That TV mount looks great. I believe it would be a very good idea to find a way to secure the TV during travel. This thing is going to bounce around and when it moves away from the wall and continues to bounce the force on the arm could really cause a large headache for you.
Mine has a sturdy velcro strap, one end attached above the TV and the other attached below. It doesn't add any strength to the mount but simply keeps the TV fast against the wall.
My cousin, on the other hand, takes his TV down and places it on the bed. Just something to think about.