the MK40 was noticeable in a pocket unless the pocket was fairly tight. This is why it got carried more in a Kramer belt scabbard than in my pocket. I mainly went that route when I had to have my shirt tucked in and still wanted to carry. The Kahr PM9 I am packing now is light enough to fit the pocket weight limit. I bet a PM40 would as well.
For him there was always the discipline of steel.