I actually think this shape looks more like a gun holster to me: https://www.yoogiscloset.com/accessories/christian-dior-black-leather-saddle-belt-bag-size-85.html. Yours has more of a water bag-ish look. And yours is more of a handbag, not a belt bag.
Nonetheless, I showed your picture to my friends (who are not interested in designer bags) and they said that it could be mistaken for a holster, especially without a logo like the Oblique saddle bags.
Looks great on you. But yes it does resemble gun holster.
Thanks very much @Bri08 and @snibor! I appreciate your input. (@Bri08, thank you for going above and beyond and asking your friends, too.) I asked a couple more bag-loving friends, and they also agree that the design could be suggestive of a holster. It may not work out for me, in my particular circumstances, but it's better to know now rather than later.