Is a pocket gun enough?  I'd really like to know what defines a pocket gun.  To me, a pocket gun is one that I can actually carry in my pocket and be able to access and draw.  Going a little further, I guess I have to specify my pants' pocket.  I live in FL, most of the time there's not a big need for a jacket, I do have a couple of vests, but they tend to be out of place most of the time.
I have a Walther PPS, which from reading the various reviews, falls in the category of pocket gun.  For me anyway, this gun is to big to fit in my pocket, although I can shoot it fairly decently.  I recently took a look at a SIG P290, it really isn't any smaller than the Walther or a Kahr that the dealer had on the shelf.  Once I looked at the Rurger LC-9, it to seemed just a little to big for my pants pocket.  I eventually settled for a Ruger LCP for pants pocket carry and ended up trading that for the R9.  The R9, I find, is almost identical in size to the LCP.
My original intent for the LCP and then the R9, is as a backup, with a larger pistol on my belt.  I am finding however, that the belt gun isn't always the easiest to dress with.  The thing I like the least with the R9 is the magazine release.  I have not been able to find a good way of manipulating it, so I kinda hope that I never need to go beyond 7 rounds.  That's a pretty stupid thing to depend on, I know.  I've begun to wonder if 2 R9 would be better, one in each pocket.  Kinda like the idea of 2 revolvers. (By the way, I have absolutely no experience with a revolver.)  The downside to 2 R9 is the cost.  Which then makes me wonder if I'd be better off with a couple of less expensive small .380s (such as the LCP or something similar).
I think a 2.9" barrel (the Walther is 3.3") on a 9mm carries more oomph than a 2" barrel of a .38, but cost becomes a factor.
So I'm thinking the answer to the question of a pocket gun being enough would depend on the definition of a pocket gun.  How do you define it?