I had not seen these variations on the theme, now I'm interested in trying some, like with sauteed peppers and onions and maybe a red sauce. Around here what I've seen is literally grits with some shrimp mixed in. I have dined at Crook's Corner. When I lived there it was a BBQ dive, so I took my wife when we visited a few years back, it had gone way upscale. It's also really in Carrboro, NC, or on the line, but that doesn't sound as good.
My apartment was in Carrboro, literally across the tracks.