Switches for your Weapon Mounted Light

I love the option of having a pistol mounted light on my carry pistols. What I don’t love is worrying about whether I can get that light switched on in a hurry. Depending on the pistol that the light is mounted on, I frequently run into the problem of reach. (It’s not like I have tiny Trump hands either. Besides, everyone knows it’s not the size of your digits, it’s how you use them.)