When I went looking for a carry gun I also wanted one with an external safety. I ended up with a Taurus PT111 3rd generation Millennium Pro and I am satisfied with my selection. With sufficient training you can become proficient in lowering the safety as you draw to the point were it becomes muscle memory. The small movement required to complete this action will not delay your draw time. I carry condition 1 and I feel completely safe.
Here is something else to think about. The safety adds a proprietary element to your firearm. In a study of police shooting where police officers have been shot with their own weapons having the safety on has added 14 seconds to the time the officer has to respond. The assailant was not familiar with the hand gun and could not fire it. 14 seconds is a lot of time when you are fighting for your life.
If you want a safety then go for it. Do not let someone talk you out of what you feel comfortable with. When the time comes it will be you, not another forum poster, who will have to account for what and how you carry.
Whoever fights monsters should see to it that in the process he does not become a monster. And when you look long into an abyss, the abyss also looks into you.
FRIEDRICH NIETZSCHE