We have one at my department. It comes in handy since we have a large rural area with a lot of wooded areas. We get called out to assist the local SO and the Parks and Wildlife at the State Park. Works great but half the time officers forget to grab it.
Glock 22 (LWD .357 Sig barrel), Glock 27, Colt M4
Black Rifle Club member #224 Lone Star Glocker #134
NREMT-Paramedic TCCC Instructor