The 3913 and a 442 are my main CCW pistols. The 3913 actually conceals a little better IWB due to its width, but the 442 is a good bit lighter.
I don't think you'll be "under-gunned" with either, but the 3913 has more rds on board, an (argumentatively) better round, and better sights. I choose it over the revolver when I'm dressed for it.
I've never gotten used to the feel of plastic guns, so it works perfectly for me. And either one is very reliable.