I do, and they're pretty easy to find here.
John Solak mentioning them is some of his posts is what turned me on to them.
Add a little pulled pork to kick 'em up a notch.
You bet! The original and jalapeno are a great side for most Q. Actually have a can open now that I'm using with spare rib tips. I've never run across the black beans, but I'll be on the lookout for it now.
Have them a lot. Our favorite are the jallepeno. Cooked Seven tri-tips for a group of folks at work and decided due to time to do up some ranch beans. The beans were a real hit...funny since I didn't even doctor these just warmed up right out of the can. Besides baked beans I use for a base ranch beans are the only can of beans in our pantry.