If you already have an ENO Doublenest, and are considering a warbonnet traveler, you might want to try re-whipping your ENO warbonnet style first. There are several guides to the "warbonnet whip" around here that can show you how to do it.
The only real advantage I can see with a traveler over a re-whipped ENO is that the double fabric layers could give you a flatter lay due to less stretch. But it's worth trying the whipping style out in your ENO first before you fork out the cash.
I agree. As I mentioned earlier, my ENO doesn't even resemble an ENO anymore. I even cut off the side fabric so it would have a similar width to the Traveler.