Carrying two different types of SLs can trip you up. Injection on on my favored Comp series, vs. twist-to-release on HKS...no bueno. Putting one down into a flashlight or OC carrier would make it impossible to get hold of. Well, for the bottom one, anyhow.
What the obove poster showcased is how I roll. I was lucky enough to upon a couple in SafariLaminate in a 'junk box' on at a local dealer. Work like a champ.