now that summer's back, I'm trying a few different things with concealing my 220; recently, on impulse, I picked up one of those Uncle Mike IWB nylon laminate things which look like an eyeglasses holder. it held my 220 pretty neatly in the small of my back, with an untucked polo shirt over khaki shorts, but I discovered two things: it didn't disappear unless I maintained perfectly upright posture, and it was awkward to draw from concealment. YMMV.
I did find that it fit perfectly well into my right front pocket; the front of the untucked shirt tail covered the print quite nicely. on the other hand, the overbalance dragged my shorts to one side.
it's doable, I know -- again, you just have to resign yourself to dressing a certain way, probably with some sort of longer overshirt. and don't forget to practice diligently with whatever rig you choose.
good luck, stay safe,
alex.