Same as any other dog if their trained right then no. But I am talking about the pure breed here not the cross. As I have said many times the GWP is not for everyone. If you can be comfortable watching a dog do it's own thing in the distance and have total confidence that you can still have control over that dog, then they may be for you. However, if you feel that letting a dog work large is not for you, for whatever reason, then leave them well alone.
TC
Yeah was thinking gwp pure, and working at distance but retaining control.