Was able to get up and personal with the Traveler at Ace in Orangevale, CA yesterday.
1. Portability: while flat you hold on one end and the large wheels on the other end do all the work. It's balanced and not heavy. This WILL take up space in your car trunk. It was folded on the floor and took a minute to understand how to raise it:
unlatch a red hook in the front
slide red tabs on the handle to pivot handle to the ground
step on the red portion of the handle for leverage, reach under near that red foot pad and pull a mechanism
stand up/pull up so the scissor cart moves to upright smoothly with the provided rear piston.
That is a mouthful because all that has to be done to get it upright. I'm 6' tall and feel this is a bit short, but I like to have my grill surfaces 3 feet high.
2. Grill space: I have a Q220 and this is wider and has more cooking area. I like that it has a split grates, I believe the Q2200 have split grates
3. Burner tube: same style as the Q1xxx and Q2xxx series with one rounded rectangular tube with no shield. The biggest flaw in the Q series for me is having grease spill/clog the burner tube.
4. Quality: I believe this will last a while, but the lid feels flimsy with 10 nuts holding a shiny exterior trim on the lid (is the trim really needed?). The lid feels lower than my Q220, but I've never cooked any tall food. The lid fits snugly so there is no cross venting like the Q-series. You can see in my picture there are 4 metal tabs on the lid that ensure the grate doesn't rattle while transporting. The lid is connected to the body with two hinges with cotter pins like the Q series. I'm a bit worried of the longevity of these hinges and the flimsy lid. I like the material of the Q series lid and the hinge system.
5. Propane: I couldn't tell how smaller tanks are held in place, larger tanks can sit on the floor on the right side.
6: Drip tray: uses the same as the Q Series and the gas grills. Forgot to check the slope of the bottom, but I think it is shallower than the Q series
You can see Ace has it for $325, which is a good price. This would be great if you have space for tailgating or RV camping: perfect for at the house and can be stored away when not in use. I didn't weigh it, but I'd say 50-60 lbs?