Hi Rona,
I would never take any risk with dogs and kids or probelmatic youth. I agree with your conclusion because not everyone knows what is his dog like (in Holland there are even frightened CsW)
But..... when people have experience with (even "probelmatic" dogs) for years, I can say they can judge a bit
And then I can tell you even a CsW is able to do such a difficult work!
So I think Per can tell everyone that also a CsW is a normal dogbreed who can also do such things
But like all other breeds also in the CsW breed not every dog is the good type to show this
Mijke