Well, I'm a cop, I work nights, and I bought the Pelican 7060. Here are my thoughts:
1. It's a good light. I bought it because I wanted a light on my belt that was a rechargable LiOn with a CREE led. I like the tailcap switch, I do not like the second switch on the body itself. It's pointless.
The battery lasts all shift (12 hours) the way I use the light. In fact, it lasts several shifts normally, but I just usually throw it on the charger when I get home in the morning. Normally the light is done or just about done charging before I lay my head down to sleep. This is good...I've even used the light to direct traffic and process crime scenes for extended periods of time, and it hasn't died on me yet.
2. I don't like the lens. Its not as durable and strong as the lenses on other lights designed for the same purpose. I haven't yet contacted their CS so I don't know how they'll resolve it, but if you care a lot about scratched lenses then just beware of that.
It's a bit large, but that's not a bad thing necessarily. I like being able to prop the light under my arm while I take notes or give someone a citation. Right now my main light has become a Fenix Tk10 and as much as I love it, it's hard to prop up to use that way.
The problem is, most officers just simply cannot afford to spend $140 or so on a flashlight. My old dept issued me a surefire 8NX so that was fine, but the majority of officers out there just can't justify it. Of course I buy it, but then look at the forum I love to read.
This light would be a great law enforcement light for $100. It would be more competitive with the Stinger lights, even though I know it's better than them, to most guys out there, words like LiOn or Cree don't mean anything or translate to any value.
Nobody these days likes the D-Cell lights.
The majority of cops out there are carrying Dorcy LED lights, or River Rock, stuff that you see about $20-$40 at Target, Walmart, etc.
The SWAT/SRT guys carry Surefires mostly, but thats mostly because they are around them a lot.
As far as an impact weapon, I have one of those. It's called a 26" ASP Airweight Duratec baton. I'm trained in how to use it, and it's way more effective than any flashlight.
Lastly, cases like Rodney King and other criminals who get into a scuffle with cops: I learned a long time ago in this line of work that if I wasn't there, not to quarterback what happened. There have been plenty videos of me handling combative people that if spun the right way, you'd think I'm the devil looking to just beat up on someone. I don't enjoy having to physically force someone to comply, but its a part of the job. I'm not making any statements as to whether the King case was right or wrong, all I'm saying is you never know unless you were there.