Bullet tech has made the 9mm very viable as a SD round. The same as a 40 or 45, no, but close enough to not be afraid to carry 9mm. I am a 45 guy, but the more I shoot 9mm in competition the more I see the benefit of landing more hits, more accurately & in shorter time frame. Not giving up my 1911 anytime soon, but don't mind carrying my G26 either with good JHP.
Since I live in a 10+1 state, I am not giving up much if anything to larger calibers. I tend to let the platform dictate the caliber & use good JHP ammo. If I were stuck in say NJ with no JHP, then 45 LRN or better, LFP would be my choice all day, regardless of capacity.

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NRA Cert. Inst. IDPA CSO