We've long seen such a trend on guns that are going for utility over looks. My CZ-82 was painted - former police surplus. I noticed that the Israeli Hi Powers that are being imported now also have painted finishes. Also police guns. Heck my SMLE No4 Mk1 has a painted finish.
Overall, I have to say that I don't personally like it. When they're brand new, the difference is less obvious. Bluing still looks better, but it's sort of subjective. My problem is in how they wear. Paint tends to "chip" off in small areas. A fleck here, a fleck there, but it's tiny pieces of the finish that just go missing. To me, bluing wears much better. Rather than coming off in flecks, bluing wears very evenly, typically on corners and areas of the gun that see a lot of friction. It's a gradual wearing though that blends back into the bluing as you leave the worn area.
Just personally I think we're just going to see more stainless in the days to come, but I have to say that I'm not a fan of the painting. Matter of fact I was (and still kinda am) debating on buying one of those painted Hi Powers, but after I noticed the painted finish I found myself looking into how much it would cost to have them stripped and then blued.