What's your threat model? how did you evaluate that? How does your kit cover it? How are you covering the gaps or new threats introduced by whatever you're doing?
I don't see much discussion of this, everybody is all training this give your guns to a trusted friend if you're having bad mental health that, at best. Even generally decent personalities like InRange don't push back against what's her face fully endorsing suburban paranoid fantasies but this kind of evaluation should be right up there with "you're going to carry your gun way more often that shooting it".
It's what my most realistic threat scenario is though. I train in order to be proficient, in order to carry, but even that is as a last resort.
It may be myopic but after my experience with the SRA, I only focus on scenarios that I can do something about. Organizing requires things to get bad enough where we start taking notes from the YPG, and we're not there yet.
(This is an invitation to discuss further)
sorry, i meant "personal protection in a large city" is kinda vague. the hogs who think they're living in a cowboy movie say the same thing and terminate all further thought, but since you're here, i assume you have more realistic expectations and scenarios in mind.