We were able to take some P365 comparison photos!
Shown in the photos below are a Sig P250 Chambered in 9mm, Springfield XDS chambered in .45 ACP, Ruger LCP chambered in .380 ACP, and Sig P365 chambered in 9mm. A few photos at the end show a Salient Glock 43 chambered in 9mm.
Hopefully these will help provide some detail on overall size of the P365.