Best advise is to try to shoot both. I traded my tcp in for a airweight and its the best choice I've made feel so much safer carrying a revolver. And call me crazy but it rides better in my front pocket better than the tcp did. I tried to carry the tcp in a Blackhawk I think pocket holster it stuck out like a sore thumb. I carry the airweight in a homemade leather pocket holster and it blends in very nice. Depending on where u live I've found out a lot of ranges rent guns and the lc9 lcp and such size guns are popular rentals as well as smiths. Whatever feels best to you and what YOU feel better with is what you should get. Oh yea my j frame out shoots the tcp by leaps and bounds( like easy head shots on the target at 15 yards vs just happy to keep it in the kill zone with the tcp). And I have small hands so the small sub compact grips didn't really bother me that much.If you decide on a snubby, you'll also need to invest in range time. It takes a while to get used to the small platform. I've had one a few years and it's always a humbling range experience at distances more than 10-15 feet. It conceals better than my small auto, (M&P Shield), and the .38+p is an adequate SD round. That said, my EDC's the Shield because I'm consistantly better with it. For that reason, I'd recommend you go with the LC9. You'll likely be better with the auto too.
The revolvers the OP would be considering would not be 6 shooters, they would likely be 5 shooters making the cylinder smaller and more concealable, I have a J frame Smith and it will print in my normal jeans if I don't use a pocket holster, which I don't think is smart anyway, and IWB its very concealable.For me Revolvers aren't at all viable as a carry option. Home protect, sure, but the width of the cylinder Invalidates them as concealable to me. Now Open carry is whole different story, but sounds to me like you want something to hide, so I say stay away from the six shooters