Any functional handgun is better than no gun at all. Keep in mind that your hollowpoints are only going to expand 60% of 70% of the time. Why hit them with two or three rounds when one .45 ACP or .40 S&W round will do the job? Keep in mind also everytime your discharge your gun in self-defense you may have a possible lawsuit on your hands if your rounds miss and hit an innocent bystander. My thoughts why I would not use a 9 millimeter for concealed carry.
Spodefly don't miss! ;)