It would be a bit cheaper shooting Harman Direct Positive prints in this camera, since the cost of film and print paper is combined into one product. The overall process is quicker, too. Although, exposure times using Harman DPP with pinhole can get multi-minutes long.
As for the design of the camera, the video suggests that the tripod mounting plates are a bit small, meaning that the camera could easily shake in the wind.
Also, one feature it lacks that my homemade box cameras have are viewing lines or dots, as an aid in composition. I suppose the tapered design of the camera body precludes these.
With all of the homemade pinhole cameras I'm not using, I couldn't justify purchasing this camera, but I applaud Ilford for marketing the product.
~Joe