Aside from the lesser known terriers the Border people are most active in many different venues such as obedience, rally, Earth dog trials, etc but it's pretty rare to find a working line.
That's not to say they don't still have the working line mentality. Connie's Border Grandog was at war with Porkypines and kept trying to go back in the log even AFTER getting a face full of quills. That's their heart as much as it is their downfall. Sweet, soft,...crazy little Bassids! Dogs that fear nothing including coyotes, etc.
One of my Borders couldn't pass up a snake without doing a Lash LaRue imitation.
The fact that even in the breed ring the terrier group is known for attitude. That keeps the drives up although the Border "should" be known as being more tolerant of the other dogs in the ring.
Many judges today want the high energy dog in the ring. When I was showing my Border in the show ring he could care less about the snapping and snarling around him. He still finished his CH undefeated in the breed ring and got his majors at the Nat Specialty and a group placement first time out as a special.
Same dog was also Best Colored Dog at working terrier shows judged by working terrier men usually from GB.
Working terrier shows are classed as JRTs or Colored dogs. If a Westie showed up at a working show it was a Colored dog simply because it wasn't a JRT. Go figure!
I blieve that goes back to before terriers really had "formal" breeds. They were either white bodied or colored dogs.
Totally different from showing in the AKC ring. The judges would announce your dog's good points as well as it's faults to everyone at ringside around the ring. You'll never see that at an AKC breed show.
Same dog was also a monster in the ground. No give and took to much punishment. I retired him early because that's not what I wanted in an earth dog.
My JRT was a great little earth dog and could be worked every day because he was a baying dog and/or a bolting dog in the ground. Never took more the a couple of nips in the yrs I hunted him.
My JRT was also one of the very few working terriers that could be called out of the ground while in the middle of working the quarry. Saved a bunch of digging if we weren't there to dispatch the quarry for a farmer.
My group didn't hunt to kill unless it was requested by the land owner. We preferred the baying dogs.
Most show lines, be they great hunters or not are often to large for natural earths in the States here. Even with great character the show terriers are pretty much ruined for real earth work.
When my GSDs are gone it will probably be back to a Border. GREAT little bassids. Connie can attest to that also.
old dogs LOVE to learn new tricks