Re: POF Rifles
1) Yes they do. Most of them are smaller agencies but, yes, they have been used by Law Enforcement.
2) Many of the parts in GAP's GAP-10 are common with what POF is selling given that they are (or were) sourced from the same place: Hogan Manufacturing. I mention this not to bring down GAP but to indicate that there are some parts in the POF guns which are good enough that other top tier vendors are interested in selling them to their customers at some level.
Which gets us to 3:
3) POF has been sued by Hogan for non-payment on an order. Its a long sordid story and one could argue there is fault to be had on both sides. Hogan is doing some unsavory things around POF's intellectual property (for example, POF argues they are selling some of the patented designs of POF as Hogan's own doing to GAP and direct-to-customer). POF has filed counter claims in the lawsuit.
Some of those counter claims have been dismissed. This is very normal with legal cases. You file everything you THINK you might have, and then the judge decides later that only some of them are really able to be substantiated.
That JUST happened in the legal case.
As far as I know, both are continuing commercial concerns and I have not seen much to the contrary.