Minimums are always dependent upon supply. When I was flying for the police in UK the company hired a pilot with no twin time even though the stated minimums were 500 hours twin. No other applicants with minimum total flying hours prepared to work for the wages.
I fly offshore now and am glad that I did the onshore bit first but it is a steep learning curve which ever way you make the change. Police work can be demanding but have you tried landing on a rig helideck on a black night in poor weather? If rsevo does that every night he will find police flying fairly straightforward.