Nothing wrong with a 1911 in 9mm, other than being an affront to all that is sacred, offending Jesus, John Wayne and John Moses Browning.
Yes, but even John Taffin, Bill Wilson and Ken Hackathorn are shooting 9mms now. Age and arthritis take a lot of the fun of shooting a .45 away, shooting a 9mm 1911 brings the fun back into it.