From my experience it depends on the cops approach to the situation, that determines whether he's going to whip out his new toy or not.
Most regular cops I've encountered really try to use words and reason before power. By regular cops I mean the ones who drive around in pairs in their cop cars.
Then there's the Response Unit cops or whatever they're called...
My friend had a huge party at his house a few years ago, for our rugby team. There were like 150 kids there, saturday night, loud music, free flowing alcohol, etc. One of the neighbors called the cops, and it must have been a fairly overreacted call, because they didn't just send a squad car...
They blocked off the street in both directions, I was out on the driveway chilling when they showed up. There must have been about 10 squad cars, a couple in the driveway, a bunch across the street and a couple parked to block traffic.
The funny thing is they didn't even get out of their cars, they had those big lights and just shone them on the house.
Then this black utility truck rolls up and out of the back comes what looks like a SWAT team(it wasn't SWAT, we don't have them in Canada, but it must have been their equivalent). These guys were the real deal. They had MP5 SMGs clipped to their vests, riot helmets, everything.
So yeah, the cars showed up and blocked everything off, then about 10 seconds later the black truck with the swat team shows up and they literally raid the backyard of the house. went around the side, everyone started scattering, and they began grabbing people who looked drunk and stuff. My mate got pepper sprayed in the face, so did a few others. One guy got tasered, he tried to run by them and out down the sidewalk but got hit by the little prongs in the driveway pretty much right beside us.
So yeah, then the cops started moving in and taking people once the response unit sorted everything out and took care of the 'threats'.
I wasn't drunk so they just let me go, but about 40 kids got taken away in some paddy wagons that apparently showed up afterwards.
Regular cops = were fairly relaxed, didn't harm anyone, spoke to people and asked questions etc.
Response unit = they didn't say a word to anybody. They went in, pepper sprayed half the party, pinned some to the ground, and tasered a guy. once the situation was under control they got in their van and left.
--
I think cops make up their mind how they're going to react and deal with a situation BEFORE it all happens. So reasoning with them and trying to converse with them is just useless.