I continue to see the same or similar statements about size and weight comparos in relation to observing areas. In the case of the topic at hand, I'd much rather transport a 12" or 12.5" truss assembly in my SUV than a 10" f5 tube. The latter is bulky and therefore a handfull while a truss assembly can be easily disassembled and reassembled in the field. I understand a 12" tube assembly would be even more difficult to move in many instances but the weight and dimensions are known factors from their descriptions on the websites that you buy them from. In other words, a modicum of planning needs to take place before you buy. That said, I'd even prefer to transport my 12" ES truss structure assembled and throw that into the back of my SUV than I would a 10" f5 tube...
I consider my GSO 10 inch F/5 an easy scope. It's not a handful, it's super easy and I am 73 years old. I carry it in two pieces, the OTA and the base.. And it only takes a moment to assemble it.
For numbers: The OTA weighs 33 lbs, the base somewhat less.
I normally take either my 12.5 inch or 16 inch when traveling in the motor home, the extra aperture is nice. But the 10 inch is the easiest to deal with.
Anyone worried about transporting a tube Dob horizontally, they travel across the ocean in a container on their side. Mine 10 inch F/5 is 19 years old and so far has no apparent effects of traveling on it's side.