I own the Nano, and P290RS. I bought them, and the Kahr PM9 I also owned, as "pocket nines", but after trying for a while, I find them, for me, a little too large, and slow out of the pocket in my Docker style pants pockets. And I don't wear my pants tight.
I keep going back to my LCP. It comes out of the pocket so much quicker than either of the two above I still own.
Now I still keep the Nano, and P290RS, and find them both perfectly reliable and fine shooters, but carry them instead in a small gunpack instead of trying to force them into a pocket role that for me, doesn't work.