More experimenting today....
IWB is out for now. Because of the nerve damage issues, any IWB on my strong side won't work. My little finger interferes with obtaining a grip with the gun pressed so tight to my body. I think I will be okay though with the right OWB holster.
I had pretty much abandoned IWB with compact pistols anyway, long before the injury. I almost completely stopped carrying the K9 in the VMII and switched to the DeSantis Mini-Slide - which I am doing with weak hand currently. Not that the VMII wasn't working - I just rarely have any need to go IWB with such a compact pistol, because I can conceal it well enough with the Mini-Slide, and it's easier to live with.
But the Mini-Slide isn't available for the Shield - which surprised me. Another OWB concealment holster I've used happily is the Galco Combatmaster. Messing around some more with the one I have, for a snubby SP101, it was interesting to find that I now can get a good grip on the Hogue-gripped SP101 with my injured hand. Didn't work last time I tried it.
Going to have to give that a go with some stout loads and see what happens, just for fun. Might be my trail gun for a while....
So anyway - I'm giving serious consideration to the DeSantis Speed Scabbard right now. While kydex makes a lot of sense to me for IWB these days, I'm not liking any of the kydex OWB holsters I've viewed so far for concealment.