Hi Robert and welcome. This has always been a 50 50 deal. The manual safety appeals to some and not to others. As long as your carry holster has sufficient trigger protection, I prefer no manual safety on my handguns as it is one less motion in the event you need to deploy your handgun in an emergency. Cheers, stay safe and enjoy!

Personally, I prefer no safety like my Glocks. As far as which has sold more with the P365, not sure? As James mentioned, one less action to concern about if the need ever arises to deploy in a situation. A good holster that covers trigger guard will suffice.

I have never seen any numbers of which sells the most (safety or no safety) I like the safety because all my carry guns have a thumb safety you like glock I dont in your case I would go no safety because that is what you have trained with