I hope they work out for you! I would ask why has no one in Europe done this? The reason I can come up with is they have been culled and tested for bite work on humans for few decades.
How do they handle hard work in high heat?
Their heat tolerance, speed, and endurance just cant be matched by a GSD or any bulldog type breed. One reason is a 2nd undercoat making them more heat tolerant than a GSD. Ive owned one most of my life and would compare their heat tolerance/endurance to a cow dog like a BMC or Catahoula. My last female would pace a 2 acre fence line ALL day in the middle of summer, my males are a bit lazier by personality but could if they wanted to.
