Thanks everyone for your replies. I think I've narrowed it down to a G20 vs G29. Will try to get my hands on both before deciding.
I am a little late to the conversation, but I may be able to add something to the conversation.
You are wanted small, light, and concealable.
AND
You want something to take the biggest bears and plenty of ammo for 2 legged varmints.
These are opposite ends of the physics spectrum. Only you will be able to decide the happy point.
I will add I have had more trail miles than many. I have had a couple times when I REALLY wanted a gun and only had a camera. I have not needed to kill any bears or any people while on the trail. The city is more dangerous. A mile or two down the trail is much safer. The risk is truly overstated when you respect the animals, hang your food....
Of course, there is the story from last century I read in a gun magazine (and have recently discusses with the authors son online), where the hunter took a large bear with a 44mag, with one shot, no big deal. Then he had an encounter with a generally pissed off bear which absorbed 12 rounds of 44mag and 5 of 375H&H and almost got him. So, for every 1000 bears which goes down easy, there may be 1 that will not go down with anything you are carrying on a normal hike.
Someone mentioned your ability to shoot. I tend to agree that it matters, but not the conclusion that you shouldn't or can't or ..., but it matters on the gun recommendations. Before I got my S&W649, I was told that I don't need a 357mag. I would never be able to shoot it accurately. Would I want to have a 500 round range day of 357mag? NO. But, a 5 round up close quick violent encounter isn't a problem. And at the same time, I have watched people with more skills that I have shoot a G20 at much longer ranges and make hits and shoot multiple targets up close much quicker than I can with mine. So, YOUR skill matters. How recoil sensitive are you? How quickly and accurately can you place 3-5-10 rounds on target? Only you know.
In the end, I think you will not have 1 gun for everything.
A micro-ccw is probably enough for east of the Mississippi. I could grab my Khar PM9/PM40 or S&W649. It would also work for the South and West. My G19 is easier to shoot. If this was S&P SHTF...the G19 is a better option, but at more weight...
My G20 is more gun and more weight. I am competent with it. I could hunt with this gun. I have a G26 and don't shoot it any more. I prefer a slightly longer grip. I plan on getting a G29, but I think it needs to be augmented to be a good gun for me or you. Get the threaded barrel and compensator. Then extend the mag with a 2 round extender.
But for active bear country, Griz, Brown, Polar, I would want more gun. I have a 629, 44mag. It is a good gun, but too heavy for "normal hiking". I am considering getting a 329, but as the 629 is good with 44mag, I wonder about the recoil with the light weight 329. 6 rounds quickly on target...
Food for thought if nothing else.