I have two XDS and have 300 rounds thru one and the only FTE was because a friend limp wristed one shot. When chambering a round, you MUST pull the slide back fully and release......do not try to ease it back into place or it will not feed. It has digested everything that I have fed it from FMJ to Starfire and Golden Saber.
My girl shoots my 5" Kimber a lot, but she doesn't like the XDS, the recoil hurts her hand.
Great gun and is my everyday carry weapon.