I've tried it. Not my thing - like you said, too greasy. We used to always make sure we had one bear tag in camp just in case anyone walked up on one in the creek bottoms.
I have hunted grizzly only once at Hitchenbrook Island, Alaska in 1964. I was walking through willows whenever this big fellow erupted from the brush and charged. You must believe that I did not crap my pants although I do not have proof of this, only my sincere assurance. The next few seconds are not a distinct memory for me but I shot until the bear fell. My hair stood on end and I was almost in a state of vertigo.