I don't have an olight but some other brands.
Every LED light with digital controlled switches needed to be turned on and cycled through to get to certain mode. I cannot turn a light on at "low setting" after it was turned off at "high setting" prior. Instead, it needs to be turned on at the setting it was turned off and cycled through.
Same with some of the light and laser pointers outthere using digital controls. They need to be turned on to be cycled through light, light + laser or laser only. So if I am in a situation. I have to turn on the unit and press some button combo to make a mode switch, in the mean time while I am doing this I have to cover my light or jam the unit to the wall to cover up my signature. Or if I was using my light at low setting for reading stuff before having it turned off, I will have to turn it on and cycle through to high if I am using it for other purpose - no more surprise. Clever design on the computer with the circuit board but obviously the designer doesn't use these things in practical scenarios.
You see there is a problem here in many practical scenarios, and you kinda notice that surefire doesn't have millions of settings and use digital control switches. I can grab it and turn it on at low or high.