Observations:
Yes you could use this radio for PS, however as an owner of one, I would not recommend it.
The unit is great for hobby use, it is quirky and unless you lock it down right, you may not be able to mash the PTT and be talking on the right freq when you need to. It just doesn't compare to real purpose built radio for commercial use.
The SW can be funky to get going, I turn my radio on AFTER I plug in the cable, and you need to select the right port. Sometimes, I still get an error but try again with success.
If you use it for this service, I would turn the dual band/channel off so that it is on a single channel at one time and cannot toggle to the last channel received in (in dual mode) thus making you check the screen and toggle your A/B before you TX. You can also lock the keypad from the keypad.
Verify your departments freq...just because people listen to it with no tone doesnt mean there is none, or a repeater. Also, be aware they may use "talk around" when on site, and you'll need to program that too.
I would buy something like a P1225 or something for budget conscious use if you a volunteer, etc trying to get started. It can be programmed as a pager, and then operate on your freqs with no confusion.
It's the same reasoning you don't put HAM-like radios in cop cars....don't need fancy, you need capable, but easy to use. In the middle of a situation, there is no time to devote to "fiddling" with your rig.