Oh I didn't know that! They are just less common then? I was told they were one of the rarer breeds.
It is the same breed. Rough coats are just recessive, and since most collies are rough you don't see smooths very often. Sael's Logan is out of two smooth parents, but they both carried the rough gene so he has both rough and smooth siblings.
Supposedly smooths in general are more businessy, but then so much comes down to the individual dog. Logan is a smooth, he's very much into business. His brother Amos is a smooth and he's seriously the softest, mushiest, lazy collie I have ever met. lol. Then their rough sister Gala is all drive and business again, only with a mischievous streak.
ETA: And Tibetan terriers aren't a true terrier like the western ones. Just like Tibetan spaniels don't share any close ancestry with western spaniel breeds. I have no idea if she was typical, but I did know one single Tibetan terrier. She was very intelligent and catlike. She was not dog reactive and had average prey drive for a dog, not anything like you'd expect from a working terrier anyway. She barked when people were at the door, but was quiet and well mannered once they came in. Her owner took her
everywhere and she was extremely well trained and socialized.
She also had a thing for chocolate truffles, and would go to extreme and devious lengths to obtain them.
She also wasn't what I'd call a small dog. More like the size of an American cocker spaniel.