I can't quite see the benefit in this design... if you are going to the trouble of building this in order to 'keep' bees then you might as well build a long hive and do the job properly with frames.
Frames are only necessary if you absolutely want to inspect the hive one comb at a time, and inspect it in a way that involves temporarily removing the comb from the hive, and (most commonly) if you want to inspect it from above (i.e. by opening the nest at the top). If these things are not required, then frames are not required.
Sure, if you want to populate such a hive quickly, using existing frames with comb, you can nail them to the roof of the hive. There is nothing wrong with using frames in this type of hive, but there is no real benefit either.
Cutting hanging on its side, unsupported, comb out of a box full of bees in order to harvest honey is going to be an interesting experience.
I'm not sure when or how they harvest, but note that the hive is lifted in a way that keeps the comb is perpendicular to the ground, and the comb is "short" enough not to break off when held at that angle (the combs won't be bigger than about 20 cm high). And the "honey" section of the hive is separate from the brood section.
I mentiond "skep" specifically because even the dimensions of the hive reminds me rather specifically of
the Uddelic supered skep.
If it's some way in between then a top bar hive would better meet the criteria.
A top-bar hive can't be inspected as a whole hive, and certainly not using a single glance, and you can't inspect the hive without removing the combs. The Bienenkiste hive can be inspected as a whole, without removing any of the comb temporarily and without breaking open the "top" of the nest, and what's more, if you spot something in two differnet combs that are not adjacent each other, you can inspect both, practically simultaneously, using a standard skep knife. Even if you magically knew which combs in the top-bar hive needs looking at, you can't inspect both of them at the same time.