Everything depends on what your tacticool mission requirements are. Tactical doesn't define a single requirement. Some might need NVG's, some might need a momentary 15 lumen low.
Personally, I use a SF A2 with blue LED's for minimal illumination sneaking around, with the ability to immediately transition to full white light if necessary without switching lights/hands. The ability for immediate white light is more important to my mission than an accidental light discharge.
Others may need it for something as simple as walking the dog with the ability to illuminate a patch of lawn to avoid stinky surprises.
Figure out what you are trying to do and find tools that you can use to accomplish your goals.