My wife got a neat sprain in her strong hand while (attempting to) chop some firewood last night. Her strong hand is out for a few days wrapped up in some sort of velcro contraption that mostly prevents it from moving. There is no way she can shoot with it, painful levels of recoil and lack of dexterity prevent its use.
Now for the good news. She carries a Glock 26 right handed so she can easily move up to my 19 in one of my left handed (my dominant side) holsters. She has enough practice to be confident in it's one handed use. Her BUG is set up in a left handed pocket holster already so that's good to go. We are going to do some more .22 training tomorrow to get her back up to speed and that should be fine. No strong meds means shes in her right mind (as much as usual...) so no concerns there.
I originally bought that Glock 19 when I had a hand injury and needed more capacity and less recoil than my 1911 or Kahr MK40, and holsters were easy to find. After I healed I kept it in my EDC rotation. It serves its purpose again today for her.
Lessons to learn: Nobody plans for an injury, practice now while you can so you're confident or can get up to speed with a little practice. Having a common gun makes finding a holster easy, especially if you need a lefty version at short notice. The more exotic the gun you carry, the harder it is. High capacity 9mms with big magazines make great carry guns for many reasons, but low recoil and a long time between fumbled one hand reloads are good. And the final lesson, just like the limping gazelle, you might look more like prey with an injury. Carry as much as you can with the most effective gun you can manage. I'm glad she's not limited to her Seecamp in .25acp right now.