If I was afraid of a semi-auto I would not carry one.
I think confidence in choice of weapons goes a long way how you approach carrying.
I have, in the past, had some consternation with 1911's and it is the reason I own Sigs.
In the last 10/15 years I have learned that it is very possible to develope a 1911 which provides every bit of confidence that a revolver can.
The weapons I own are reliable and I would carry them into any situation where my life hangs in the balance, due too their performance.
That is just me. It cost more, but in the cost comes some amount of pride of ownership.
Do what makes you comfortable---I do.
Blessings