My Travel Zafu goes with me whenever I travel.
It seems unlikely that even one serious about meditation will lug about a large stuffed Zafu. When traveling, camping or in my case even aboard fishing vessels in the rough waters of the Bering Sea, the inflatable zafu is a necessity for me. It's lightness and compactness allows me to take it anywhere. I highly recommend it.
The key to using this Zafu is the proper inflation. With just a few puffs of air, it is ready to use. By not inflating it completely the zafu will form to your body. Air is actually quite hard and over inflation produces the effect of sitting on a ball. With proper inflation one can sit quite comfortably even on a rolling ship at sea. I encourage you to experiment with the inflation to find the optimum level for your sitting style.