From the link I gave, the person said it took them about 12 hours to build it. 12 hours into the UDS build, I had already pulled a couple racks of ribs and chicken off the cooker. I think I had a total of 1 hours in the build.
Now I have seen some cooler ones, like Patrick's (Tex a Que) welded on a dolly with an attachment that accepted a stoker.
Jim of McFrankenboo also adapted a stoker too.
However, the double barrel would allow space for a Whole Hog, which would be cool.