Yeh - this time of year they're out of hibernation, skinny, and hungry. Exterior garbage cans are not a good idea in my neighborhood. Haven't seen any griz in a quite awhile at this low elevation but you wouldn't want to be the first one and armed only with a cellphone camera. "Hi, Mom, this is the b'ar what et me!" No thanks.
Personally I opt for a .41 magnum on my belt and a whole lot of common sense. It'd be the common sense that keeps me alive. The magnum is for letting my neighbors know where to look for my body...
I purchased a real pretty .41 magnum revolver suitable for carry. A nice titanium Taurus. I usually take my S&W 629 w/4" barrel (44 mag) with 240 gr PMC in a Kramer holster. It's satisfactory for big cats and black bears. I'm not convinced it would do the job for a grizzly...aside from marking the critter as the probable consumer of my carcass.