I'd go with the 19, if it were me. Most of the time, a handgun while camping is simply an insurance policy for a very unlikely event. Where ever I went in this country, I would be far more worried about two legged predators than any wild animal if you are in a tent. The Glock will give you plenty of peace of mind, will carry more ammo, and let's face it...is cheaper to replace than the HK. I don't own anything as nice as an HK, but I've never felt too worried about getting my glock dirty or caught in a rain storm with it on my hip. If I can't get to where I can strip and reoil, I just get to where it's dry, shake out the water, lock back the slide to let it drip out and invert the magazine to make sure it's drained. I don't believe in Glock Perfection, but I believe in a fairly inexpensive firearm that takes a good amount of abuse without much fuss
An animal might get curious and poke around your site while you are gone or asleep, but you probably won't even know it's been there unless he leaves some scat. If you're really worried about bigger critters, I'd skip the handgun and go straight for a shotgun loaded with slugs or a big bore rifle. If it's enough of a risk, bring the right gear.
For me, when camp on site at my mom's fiance's property, I usually grab a 12 gauge or a .22 and call it good for the site. Really, it depends on the time of year, how many people might be poking around, and where we are actually camping. Most of the time, the .22 is enough "firepower" for me to plink off a few shots for fun. Raccoons are the common enemy, but I rather like the lil' bandits. They don't bother me any. However, should one come up acting rather aggressive, get ahold of my dog, or seem sick, a couple pops from a .22 in the bucket will put him down. 12 gauge is for coyotes, hillbillies, and cougars
For stomping around in the woods or hiking, I go with either an old Nagant revolver or my CZ-52. I really don't feel the NEED to have more than a packable pistol on my person. Plus either one wouldn't cost me much if I lost it. The Nagant is nice for plinking stumps with or tree rats should I need to eat one. Plenty accurate for that, and actually really reliable with .32 long. I like to carry the CZ-52 when I might run into thicker trouble. The ugly soviet bastard child of a 1911 (grip angle (ish), weight, capacity, etc) and a .357 (penetration, report, flash, etc), the 7.62x25 caliber will punch holes in just about anything. I can carry more ammo than I could with a .357 should I feel the need (a milsurp 70 round box is about the size of two boxed bars of soap...if a bit heavier
), I don't have to worry as much about innocent bystanders in the middle of nowhere, and the gun packs really nicely in the field holster that came with it.
But I digress. Of the two if you're going to pack them around on your person, I'd have to go with the Glock just because the likelihood of NEEDING the gun is outweighed by the downside of losing, muddying up, fouling the gun. If you're a good shot with it, it should have enough caliber to do what needs to be done. Bigger critters need bigger ammo (unless you're an Inuit that sneaks up and shoot them in the ear
). For bigger ammo, I'd bring a bigger gun.