I have if you count helping out a PH and a client stop a couple of them...I have joined in the fun on more than several ocassions over the years when it looked cheeky, or on follow ups and by request I might add, as I don't butt in on another fellows hunt, but most allow an extra gun is well received on a Lion follow up, some with Buffalo and elephant....I have shot the cats but in all honesty I am not a cat hunter...I love to hunt Buffalo and also big elephant bulls, thats my thing....But big bull elephant get further away all the time, as they have gotton to expensive for me...I still shoot 5 to 10 Buffalo every year...