It's far from being concealed.
The 4" N frame grip hangs out there completely, and the 3" tucks completely into a front jeans pocket.
A holster is much better. All I can say is that they'll fit... Not a preferred carry method... Pretty slow to pull out of the pocket too, for a revolver with the hammer spur.
I do like pocket carry better than mexican carry however.
I've hiked for miles with my 3" K frame in my back pocket.