Those are excellent "whim" guns. I have two of them, a 4.75-inch "standard" one, and a 3.5-inch "birdshead" gun. They're both hard to put down once in hand, even empty, and the safety nub allows dry-fire when flipped up. The latter is my favorite yard-gun.
And, they're cheap enough that you don't feel like you're out much.
Mine are good little shooters, and both are convertible to .22WMR.
The HRR is certainly no Ruger SS (one of which I also own), but they make great knock-arounds. Enjoy!