The answer is 'yes'. Given the size is acceptable, it is not needed for migratory purposes and the operator is able to remove the frames from the side of the hive, I see no real difference between one of these and a Jumbo National, excepting working height, which can be altered to suit the indivual, and the way it may be operated. No different from a beehaus, for that matter.
Indeed if really a problem with removing frames the colony could be confined to the rear section! Not very efficient but possible.
This type of hive is eminently suited to a beginner. No less, and likely more so, than the beehaus, while at a small fraction of the cost, if self-built.
Not sure where you are coming from - a genuine enquiry or a criticism.
I was not recommending anything - I had said as much in an earlier post. That choice is down to the end-user. My view is still that of keeping two colonies as a starter is best, but what beetainers are used is the user's choice.
Oh, and extracting 14 x 12 frames might be a challenge. Might need to follow the 'scraping' method of extraction.
As far as the hive goes, it could quite easily be operated as a National. Choice of number of frames is down to the user; it can be supered with National supers, rather than those fiddly half-supers - but again down to user choice (legs might need to be shortened for some).
But, at the same time it has the added facility for artificially swarming in the horizontal - a simply superb way to get the job done, IMO.
It has very good over-wintering attributes. The un-used end can be sealed and insulated, the sides of the brood area are easily insulated. More top insulation can be added (I made my roofs deeper to accommodate this). The entrance/exit divider can be effectively sealed along the top and sides to retain heat. Bottom rails can be added as a slide for fitting a false floor during severe weather, (or for fumigation, or for varroa drop checks).
IMO, likely a better choice than a beehaus for a beginner, but I shall be able to make a more definitive comparison if/when I colonise the plastic version of the Dartington.
Spring expansion is simple, too. Add frames of foundation at the front with no need to disturb the brood nest.
I would not personally recommend a hive type, novice or otherwise, because if the user is later dissatisfied with their choice there is no blame to attach to me - it is their choice.
Any details you are not sure of?
Regards, RAB