I have an old H&R similar to the ones above, and a couple of Ruger pistols. I have a holster for one of the Ruger pistols. I have never actually carried any of them. They all have long barrels, and the Rugers have slabside bull barrels. They're great for match and target shooting.
I have a couple of Ruger single actions, though neither are rimfires, and they're great guns. I don't much care for ejecting tiny .22LR brass from a single action, but otherwise, the Single Six and Bearcat are wonderful things.
But... if I had to pick the .22 I'd most want to
carry with me on the trail, it would be none of the above.
It would be a 3" S&W 317.
http://www.smith-wesson.com/webapp/...selected=over&isFirearm=Y&parent_category_rn=
The thing weighs less than a 637, comes with adjustable fiber sights, fits well in my hand (just like a Model 60), and comes in 8- or 10-round versions -- far easier to load and unload than a single action, but with no little oily .22 magazines to fiddle with in the dirt. I'd choose the 10-round version. It's compact, extremely light and easy to carry, but fun to use for plinking, too. I don't think there's another gun quite like that.
It's not cheap. I don't own one, for that reason, and that reason alone. But if I REALLY wanted a gun for that specific purpose, I'd consider selling something else, saving some cash, and buying one.