I guess I need to look at one in person. I have an old meade lxd75 that I could not get good tracking out of that I had intended to be portable mount. But at time I was using an 8" Newtonian that acted like a sail in the lightest breeze. I may dig it out and see how it behaves with a lens. I would love to have something easier to haul on trips.
This is the reason I got the Astro-track astrophoto package. The unit is about the size of two Dslrs (excluding the tripod) and I can pack in my luggage with the tripod. It has an st4 interface as well so you can add a scope and guider to the setup for longer exposures. I've taken up to 60 seconds on it and it tracks well even along the ecliptic. Haven't had a need to go much more than that yet due to light pollution. However I am planning a 2 week trip to Yellowstone next year and I'm shaking out all of the new gear now so I Dont have issues once I get there. It seems to be the most portable option yet can easily handle the gear I intend to take with me. 300 2.8L ii, 5d3 and 7d2 Both with grips.
I think it's design capacity is 11kg.