Former LEO myself - back in the late 70s-early 90s. Things may be different now, but this is my take based on my recollections from that time.
Most police officers are just people doing a job, and unless something has changed in the relative compensation since those days, it wasn't a highly paid job and our paychecks went to other things like rent and car notes. As far as gear, most of us would only buy what we could get on our annual uniform allowance at the uniform store. If it wasn't an approved item that the city would pay for, forget it.
I carried a Buck 110 on my uniform belt (primarily because the sheath would fit on the wide belt) for maybe 5 years, and later replaced it with a Gerber Bolt Action Folder which was much lighter. My reason for carrying a knife was to use as an emergency seat belt cutter, but that situation never arose in my entire career, and EMT shears are much better suited to that anyway. It was never intended for weapon retention or last-ditch defense.
I think I knew maybe one or two other officers that carried a Buck 110 on their belts during my career. Maybe a few others carried something small on their keys or a small pocket knife. Even the crime scene guys just had X-acto knives in their kits.
After you get past the rookie stage and you settle into it just being a 40-hour a week job, most of which is spent driving and writing, you start getting pretty minimalist as far as gear you have to lug around on your belt or in your briefcase. Also, you wanted to minimize the amount of crap you had to take off/out of pockets and put in the weapons lockers before going into the jail or courtoom, which was a regular daily occurrence, sometimes multiple times a day.
As far as recent experiences, I have a younger friend who used to be on a SWAT team for a nearby county Sheriff's department, and he's an avid hunter. He was carrying some really beat-up looking S&W folder, and not one of the older ones but a low-cost import. I gave him a Kershaw Skyline which became his favorite knife for hunting and everything else. And yet, he apparently doesn't know how to sharpen or maintain it because he would bring it to me every year before deer season to sharpen it back up, and he had dinged the edge up pretty bad each time.
So there's another LEO example who was not/is not into knives, even though he also hunts.
If you are looking for a profession where people are actually focused on knives - look in professional kitchens, and even then you're going to find the majority just view them as tools to get the job done and may go for the cheapest / easiest to maintain.