I'd buy an LC9 instead.
Seriously, my EDC is a G26. I can't think of any reason to think 5 rounds of hard to shoot .45 would be better than 11 rounds of easier to shoot 9mmP. Everything I read says shot placement is more important than caliber. I can't imagine anybody who would get better shot placement with a PM45C than they would with a G26, an LC9, or a PM9.