I've done one of Coyle's new home shops, but have not done their restaurant shops, so although I can't compare, I can say the shop itself was easy, since you are prohibited from taking the time-consuming model home tour and, IIRC, are instructed to remain on-site a maximum of 15 minutes.
Also, since they provide a sample narrative, with pointers at each step, I found it provided a nice framework to follow and made writing the narrative all that much easier. In no way, shape or form would I describe it as "narrative-heavy, particularly since there is only so much to report about a 15 minutes shop. FYI, this was on their shopmetrics website and no ratings or feedback were provided.
(heart)
I intend to live forever. So far, so good.