I just had to watch this when I saw who it was. Say what you like about George but he had so much character.
I actually think he was at his best here, personality-wise. He was half salesman half funny guy. From the second half of the 90's on, he was purely salesman and always fake. If he was asked "Is Grimsley a good fighter?" during that period, he would've started a populist story on how age doesn't matter, how he will show that being 40 years old is not a death sentence, etc.