Everything went swimmingly with our installation. Cutting them to size was easy with our hand saw, and we did all of the painting in our garage. We even cut out a small area for an outlet, which was much easier than expected, and drilled holes for our wall hooks. Once we were ready to put them up we used a high-tack adhesive (specifically, Loctite Power Grab Express All-Purpose Interior Construction Adhesive) to mount them to the wall, and once that was set, we added a trim piece along the top to finalize the look.
All in all (cutting, painting, mounting, and then some small touchups) it took 3 days for this project. I couldn't be happier with the result and with how easy this all was.