I have done this in the leathers I own. You have to be very careful if you take it out because the clear plastic pieces that come through the ratchet are very fragile and can break easily (and if you ever want to put the ratchet back in or have to if you change departments trying to put back in the ratchet probably is not the easiest of tasks). If you do it you have to do one at a time and I find using a flat head screw driver and pliers works best for me atleast. You may find a different way that works better for you.
Place the flat head screw driver on the plastic piece flat then with the pliers slowly pull up on the ratchet until it pops off the first piece the do the rest on the same.
I recommend it but it first comes down to department policy and if they will allow it and next it comes down to how it fits and personal preference. I always tell people I work with or talk to that make sure there is a reason your pulling it out, not just because someone else has it done. If you have a reason thats a good thing. Mine is because when you have your pack on and are trying to look up (atleast with me because my ratchet is usually always fully extended) it is difficult to look up.
Also size maybe an issue. Like for instance with me a large is to big but a medium is just alittle snug so I removed the ratchet for that little extra head room and also the plastic ring inside the helmet that does absolutely nothing for the helmet. (I think its just there so they can charge more lol). But remember all carins leather helmets are made by hand so every medium wont fit the same and every large wont fit the same.
So again it comes down to department policy and personal preference.