Two memes that needs to die. Browning already gave us .380 ACP and .45 ACP, which will do everything you want these to do, but better. We didn't need to import metricslop eurokek chamberings.
Also now that we are about to enter the age of legal and cheap suppressors, there's no reason to use any chambering that isn't subsonic in essentially every loading (like 9mm and 40 S&W).