I tried a shoulder holster for my first one. Having to always have a covering garment got old fast. Plus I didn't feel (and still don't) that they are easily concealable. Yes, under the right clothing (or for some body types or medical conditions) they will work but generally a strong side hip holster works well. I know that I can carry just about anything on my hip with an untucked tee shirt and I'm not a big guy.
Now, I wouldn't even consider a shoulder holster as I'm used to my gun being on my hip. I don't want to be grabbing air if I ever need it.
All the above isn't meant to demean pocket carry any. Its just that generally you can carry a larger gun on your hip. Although I have heard of a guy pocket carrying an N frame snubbie and I used to have a parka that could handle a 1911 easily in a front pocket.
Steelheart