Great practice tool.
"The laser should only be visible to the"
True most of the time....the instances where it "might" be a liability are when it is misty, rainy, foggy, smoky. Not often, of course, but under those circumstances, more than just a dot of light on your gun or a muzzle flash, the laser presents a highly visible line of light leading directly back to the shooter. Even minimizing "on" time doesn't change that. Don't get me wrong, I like the things and carry one but I was surprised a tad when I clicked it on one drizzly night while out with the dog.
I'm curious, though, about how visible that line would be to someone on the other end of it. My assumption is that it can be seen easily but I have no first hand knowledge of that. Is it even worth worrying about?