I've had two since release day I think, including the smug camper. I was scanning amiibo daily for a while to get recipes but I stopped because I didn't want to miss out on random campers. Since then I've had one camper and it was big top. No thanks!
I wonder why they decided to cap it at 20% chance. Do you think they want us to spend more time with our villagers rather than cycling through them? I know they were hoping we'd get attached to our two starter ones even if they weren't our favourites to begin with.