Never seen a marbled clay pipe in recorded history, personally I think it's a new thing (1900s). There are also black clay pipes, I have heard it 'said' they were make in Germany way back but that only came from the company selling them today.
As far as being hard to carry without breaking; yes, so was any form of Glass or Pottery. I have broken more onion bottles and leather/gourd canteens then I have clay pipes.
There are artifacts of special Cases both wooden and metal for carrying clay pipes; Not Cheap, not even the few replicas I have seen.
I have also heard of them being carried in reed tubes, and of course the ever popular Neck Bags.
Myself, I always found my hand, mouth, hat band to be the safest way, or I wrap it in a cloth, carefully pack it in my gear and hope for the best.
I have two now, one heavily smoked (dirty) one I keep clean that I have had for...maybe...7 or 8 years. Others in the past only lasted weeks or months (never broke one in just "days"). And I always keep a few spares at home.
If your a hunter; you find a way.
If your a smoker; you find a way.
If your just trying to imitate; best of luck.