Not an expert, but ...
Look if you are afraid of a gun jamming - then have TWO guns! Geeze - you figure if your life depends on it...
Actually, although I do love my 10mm Glock, I will confess that my nighttime self-defense gun is a heavy-duty (Astra 960) .38 revolver. ($100) It is in perfect mechanical shape, and is a very good and accurate shooter. I keep it very clean, check it periodically for rust, etc. and keep a full speedloader and a box of bullets next to it. No grit under the extractor or timing problems with that gun!
If I need it, I am pretty confident it will go bang.
That's my ugly work gun. The other XX guns I have are for fun!
So I don't seem to be contradicted here by what you do. You evidently have other guns, probably automatics among them, but to face sudden attack, you choose a revolver, even a perhaps marginally powerful one. It's probably a 4" though, so you are getting good performance from the load. Ugly is in the eye of the beholder, and I think a failures to stop is about as ugly a situation as I can imagine being in.
If one can't or won't carry two, then the choice becomes somewhat worth considering, which is all I am saying. Also, the scarcity of people handgun hunting dangerous game speaks to the somewhat superior reliability of good revolvers. Real quick and easy to check "how loaded" they are too, especially for novices. Personally, I often carry one of each when circumstances indicate the possibility of colorful times ahead!