I have working tervueren and aside from the long hair, their genetics are exactly the same as the working malinois.
Show tervueren are completely different, and have a host of health and nerve issues. Epilepsy, gut cancer, eye issues. I actually don't even like the way they look- like over-hairy collies.
I have a few 15 week old working tervueren pups that I'm working with now, but as I said, they are malinois with a bit of extra hair and are all business. Fit for mondio, French ring, KNPV, and especially "real" work. I'm raising them as green dogs right now, because I want to see how they mature. Real nice looking pups.
Same story with the Belgian shepherds or groenendael. Can have the same genetics as a working malinois or be very different. Some breed tervueren more for agility, they are still working line but very open with next to no defense drive. Others have long-coat malinois that can be of whatever variety the malinios come in. From all prey to high fight drive... choose your flavor.