It is reassuring to hear that the SP guns are essentially the same as Colt LE guns.
As to the controversy regarding the "LE only" rollmark, somehow I doubt that the people that have such guns (I used to have one but I dropped it in a lake by mistake ) will be in a rush to get rid of them.
To me it seems that if the state of society has gotten so dire that LEO's will be looking to confiscate guns, they'll just see a "black rifle" worth confiscating, and I doubt that a roll mark that reads "Gun Designed to save Puppies and Children" will give you a pass at that point.
Remember, the various "assault rifle" bans have targeted makes and features, never specific roll marks.
Formerly known as "Son of Vlad Tepes"