I’ve had Bouvs for over 25 years, never as a breeder. As with any breed, you would want to know where the dog comes from, and if from a breeder, how the pups were raised and what the parents are like.
I got my in part for the conformation ring and mostly as companion (but, as I do not live on a farm, that was not a consideration).
I have loved every single one of them and miss them at the breed every day (I am currently in a wheelchair and have a Border Terrier).
One of my most stubborn dogs was also the most loving and gentle. I’ll never forget the day that some friends came over with their infant in one of those seats that double as carrier and car seat… he carefully curled up around the carrier which was sitting on the floor and kept watch over her.
They are a herding breed but very different than most of the herding dogs you see in competition. They are drovers rather than fetchers (i.e., they go with you to move stock, not go out and bring the stock to you). They can learn to fetch but that is not their natural style. They also have a soft eye rather than, say, the, BC’s that have a much harder eye when moving stock.
Mine when to the groomers usually every 1-2 months (usually every month) as grooming/bathing for me was hard. My last 2 had uncropped ears which I loved along with a shortly trimmer beard. The only “smell” I ever noticed is their feet, to me, always smelled like Fritos 
Their nickname is Vuillbard or Dirty Beard 
If I was in a better position in my life for a big dog, I’d have another one in a heartbeat. Yes, I love my BT, but I so miss my Bouvs…
PS- They have been used in the past for law enforcement/military but not as much any more as some of the other higher drive breeds such as the Mals, or Tervs or GSDs.