Lawdawg45 (again) makes good points
"carry what you're comfortable and consistently accurate with"
that sums up what I do believe the majority consensus would support
comfort, competence, confidence, consistency.. it's an interacrtive progression, not a vs. vs. vs.
JohnKSa also offers good points
"a caliber change for a carry gun affects more than just proficiency and power."
I do believe CCW choices inherently imply more compromises than at-home, and I do choose different handguns for at-home vs CCW.
Acknowledged, there
are merits in arguments to the contrary, that you should always carry same (whatever it is you shoot best of all, with speed & accuracy & confidence).
In any event, I do not propose that all should do-as-I-do
in matters of life or death, there is really only one vote that counts.. your own
(and in matters of marriage, don't argue with the wife, like Lawdawg45, let her choose her own !)
PS
yeah, all us old shooters are too doggone opinionated, and it do get too doggone overheated from time to time