I wore my M&P Shield for two yrs before I sold it in a Cloak tuck IWB holster. It was comfortable & I was happy with it, I did upgrade to the optional leather belt loops which I recommend.

I did change to a DeSantis Cozy partner IWB leather paddle holster & the comfort between that and the cloak tuck was night & day. The Cozy partner was by far more easier to put on, held my pistol more securely and I really liked the 15° FBI forward cant better than the Alien gear. I now exclusively use DeSantis OWB speed scabbard holsters for my pistols since Texas is now a open carry state.