I would suggest that very scenario. Please make sure and have someone film the encounter. A documentary could then be made, featuring fluid dispersal rivaling movies such as Saw or Hostel. I always enjoy a gory flick, whether fiction or non-fiction. Thank you in advance for your sacrifice.:
The best way to fight a bear is with a sharp stick. You ease up behind a grizzly bear and poke him in the Butt with the sharp stick.And if you live over the mauling that bear give you. You can say Boy that was the stupidest thing I have ever done.
Same goes for a Knife! :
An old hunting guide once spoke to the group I was in about this very subject. He said that the primary concern is to not put a "death-grip" on the knife. He said to "Hold the knife nice and easy. Otherwise you're going to die all tensed up".
What difference would a Tom Brown knife do? I'd suggest saving yourself/family some money and just taking one of the cheap butter knives out of the kitchen. Now even though you've died... you didn't lose that what I would expect to be an expensive knife.