I work as a full time bike officer in Washington state. Everyone on our team goes clipless. Once you get comfortable/familiar with the clipless, they're better than using a platform. You can get more power from pulling up with the foot, instead of just pushing down. We don't stay on our bikes when contacting subjects, we place the bike in between us and them. If they start running, if you can't catch them on your bike, you should probably get a new job, or train harder.
The only thing I've found with the clipless, is sometimes the cleat will cause slippage on a smooth floor. I've almost done the splits while talking with people inside buildings. I just focus now on keeping my weight back more towards the heels on slick floors.