Thermal bricks / Poroton and insulated clinker - Is that optimal?

I see the advantage in the proposed construction in the thickness of the wall. Anyone who wants clinker necessarily builds relatively thick, which can be compensated to some extent by the insulating effect of Poroton to keep the insulation thinner. It can certainly be done that way. Personally, I am not a fan of Poroton, but that may be due to the region, and the images of crumbling bricks scare me. But that is just a matter of mindset. In general, what would bother me about Poroton "outside" is the almost forced use of Poroton "inside," because soundproofing inevitably becomes an issue there. There are plenty of experiences on the internet mixing it with sand-lime bricks inside... I would avoid it.

From my point of view, this construction does not seem to be really weak in any area and has very good insulation performance. It just has no strengths.

The typical sand-lime brick construction with ETICS and plaster has the great advantage of sound insulation and massiveness. In contrast, you really have to add a lot of insulation to achieve decent insulation effects. The Poroton alone already has very good insulation performance but is very weak in terms of sound insulation and massiveness.
A faced brick wall offers advantages in weather resistance and sound insulation, but it also increases costs, the risk of construction errors, and the problem of different materials. On the other hand, clinker slips are less expensive, also look good, and provide good weather protection.

The advantage of these insulating clinker bricks seems to me that they are hardly more expensive than a pure ETICS or glued slips and at the same time lead to fewer construction errors. The thermal bricks also seem to me a good compromise between the strengths and weaknesses of aerated concrete and sand-lime brick. In any case, I immediately became attentive when I heard about this construction and thought it sounded pretty good and sensible.

16cm WLG 032 is usually sufficient to achieve KFW 55. Adding 17.5cm KS makes 33.5cm. This can only be undercut by aerated concrete/highly perforated bricks+ETICS or wood. With Poroton between monolithic it becomes tight at 36.5cm, then you are dealing with filled stones and they have their price.

Poroton alone already has very good insulation properties, but it is very weak in terms of soundproofing and massiveness.

It depends on the Poroton. A T16, like we have, insulates poorly, is quite heavy and stable, and has good soundproofing. Your description would, to me, rather fit aerated concrete.

These insulating strips are a real crutch for me in new construction and, from a building physics standpoint, questionable compared to a real clinker facade. It is also less robust mechanically, and I see more potential for errors during "installation." Last but not least: There is no problem due to different materials with facing masonry. With insulating clinker bricks, I see this rather, because different materials are powerfully connected here.

Depends on the Poroton. A T16, like we have, insulates poorly, is quite heavy and stable, and has good soundproofing. Your description would rather fit aerated concrete for me.

Yes, YOU are right. Actually, at that point I meant aerated concrete and not Poroton.

Actually, at that point I also meant aerated concrete and not Poroton.

But blood sausage and liver sausage are quite a difference ...