Personally, I am looking into getting a 642/442.
One of the reasons that I am doing so is I want something as a backup that can fire through a pocket if needed, and will fire if pressed up against an attacker.
Someone who I know has many years experience as a LEO stated that it is the "Ultimate Get Off Me" tool.
I figure if I am ever in a CCW situation, I will be well behind the power curve and having either of those abilities are worth more to me than fast reloading or smaller carry profile.
But, that is just me.
I have fired a LCP 2x, and I would prefer the revolver myself.