It's already been said by a few others, I believe, but I will say it again. TeamSpeak is not a replacement for our ingame radio, it's IC channels are used entirely independently from the radio as an addition to enable us to use multiple radio channels simultaniously for tactical situations with a high amount of radio traffic which would otherwise clutter the radio and make it impossible for units that are not involved in these situations to continue fulfilling their duties, which is realistic and an absolute necessity for a Law Enforcement Agency to function on the field. We can't go without. Of course an ingame solution would be preferable in the future, but we don't have that right now.
It is however not the advantage you might be lead to believe it is, as for 95% of the time an LEO spends on duty, they will not be in a tactical channel and merely utilizing the ingame radio like everyone else on the server.
Yes, it does unfortunately happen that sometimes, while a LEO is talking in a tactical channel through teamspeak, they will need a /vr and are not able to be heard ingame. This is unfortunate and a slight advantage in a very specific set of situations, until they are notified of them needing said /vr, which they, obviously, will be in usually a short matter of time.
That said, for 95% of the time a LEO spends on duty, they are faced with much the same issues. Teamspeak does not fix or influence the issue of VOIP breaking in situations in which LEOs are not in a tactical channel.
For example, if a LEOs VOIP is not functional and they get shot at during a traffic stop and attempt to call this out, they would do so ONLY over the ingame radio, so if their VOIP is broken, they are faced with the same disadvantage as everyone else, as they are unable to announce themselves being shot at. For units to be called into a tactical channel for a tactical situation, a LEO is REQUIRED to use the ingame radio, there is no other way of doing so.
I wholeheartedly invite you to partake in a ride-along on a character that is eligible to participate in the program.
I have no doubts that you will see and experience the way we use radios and tactical frequencies in the field if you do so, and I'm sure this would clear up some misconceptions that appear to be quite widely spread, and even if that doesn't change your mind about the matter, you will be able to have a more educated opinion afterwards nonetheless. I'd call that a win-win.