I will admit that some of them, especially the German ones, have some fine artistry to them, but to me, they are just like a Swiss Army Knife. Not really great for anything.
For instance: Since when is a single shot 12 gauge a really first rate shotgun for real any world hunting? Answer (based on my 55 years of hunting) Never. If I am hunting Canada Geese, do I want a single shot 12? Nope. If I am hunting running rabbits, do I want a single shot 12? Nope. And even if I am hunting the lowly fox squirrels, do I want a single shot 12? Nope. Exact same thing holds true with a .22 LR.
Now a single shot center-fire rifle for big game, yes I get that. But not with a shotgun barrel and a rimfire barrel welded to it.
So, personally, I think that many folks are just enamored with the "gadgetry" of drillings.