That wasn't my experience with them and they may become prohibited at any time. Then your out $3000+ with nothing to show for it. Hopefully they don't rule that way but it's still up in the air right now and not worth the risk till after they announce their decision. They don't have to compensate owners if they take them away and if you keep it and get caught you get charged with possession of a prohibited weapon.
they had to compensate t97 owners when they took them and with that precedent They would never get away with taking the swiss arms away without compensation. I learned a word for that in college; THEFT.