I bought one not long after they first came out. Haven't shot it a lot but haven't had any issues with it. I like it but I usually run 870s so I haven't done a lot with the SLP.
There was one the the one-day Shotgun Refresher class I took with Louis Awerbuck in September. Its owner had been slack on maintenance, for a good while apparently, and it started choking up/failing to function shortly after noon (on a Rolling Thunder drill, naturally). A little ATF and a rag seemed to take care of the carbon problem... but it could and should have been avoided. If you're gonna shoot a gas gun, clean it...
Mindset - Skillset - Toolset. In that order!
Attitude and skill will get you through times of no gear, better than gear will get you through times of no attitude and no skill.