My uncle breeds these dogs in Bristol. He's been well connected with good bloodlines and vets for a long time.
They were actually bred very specifically to be a dosile and family friendly version of the older pitbul breeds. I owned one for 8 years until he passed away to cancer and it was the best dog we ever owned. I named him Chop after GTAV for a laugh.
Dude was around 45kg, absolute brick shit house, but I could rest a treat on his nose and he wouldnt touch it for an hour until I said he could. Best dog ever. Watched over my house and baby like a mother bear.
HOWEVER. And of course it is a big however. These dogs are powerful, and if you are not a very accutely aware owner at all times in public with a VERY well trained example especially, they can have you off your feet in a heartbeat. And there lies the problem. I often had other dogs sniffing around him and, given his size, other owners where clearly terrified that it was going to kill their dog but reality is he was very well trained by myself and worked properly, so was just being playful.
It's a damn shame because when trained and well bred, this is as dosile as a golden retriever with 3x the intelligence and obedience. Bans on dogs are pointless, they will still be bred because the breeds they come from are not banned and easily available. In fact I saw a thoroughbread argentino at our park just the other weekend, another banned breed here in the uk.
The problem is when gypsies and pikey chavs get ahold of them, starve and beat them and encourage them to attack other animals in the parks that over time just become full blown monsters. And the power they have, they can tear just about anything to shreds in seconds be it animal or human.
Sorry but they are big goofs. The pussies that need them to be bodyguards are just sad cunts that give them a bad rep.