Here we go with the reliability thing again.
If you feel more comfortable with a revolver then that is what you should carry.
If you like the reliability and firepower of a semi then that is what you should carry.
I like a .45 and that is my primary choice---but it is not the only choice I have.
I do not feel the need for a 44mag in any platform.
I have a new .41 mag and I like it.
I will never carry a weapon I can't shoot and do not have complete confidance that it will perform---it may not but going in I am sure I can trust it.
I carry: a .380, .38, .38super, 9x23, 9mm, .45 (both semi & revolver), .41 mag, .357mag and it will be my luck that the one I have on me will fail
---but going in I will have done all I can to make sure it doesn't.
Blessings