Rastoff
US Veteran
I hope it won't ever fall out. If you have even the slightest concern that your gun will fall out, get another holster pronto. A gun falling out of the holster is unacceptable.i havent had any issues with the pistol trying to come out but its only alittle over a week old. im sure it will happen.
You also have to consider the activities you'll be doing while carrying. Riding a motorcycle is different from driving in a car. Construction work is different from office work. So, the more active you are, the more you want stronger retention.
There are lots of places that offer lefty holsters. Unfortunately, the Shield is still new. So, you may have to get a custom holster and that will cost $75 and up for a decent one. Lobo is a good place as is R Grizzle.