
I had a TM , but only for two years, he came to me as an adult, but sadly died at just 8 years from Cancer.
In my ( limited) opinion, I'm not seeing the similarity between them and Rottie's, in a nut shell, I would describe a TM as a cat in a dog suit .
They are independent thinkers, they are trainable, but finding a reliable motivator is difficult, they may well carry out a request ( and believe me, it is a request, and they may get back to you a week later after due consideration ) three times in a row, and then decide never to repeat it again.
A sense of humour, endless patience, and flexibility tempered with firmness, but never ever harshness, are essential to get on with this breed.
They are incredibly affectionate to their family but without being fawning, to the rest of the world, they tend to ignore anyone not in their circle, and whilst they shouldn't be shy, neither do they appreciate being manhandled by strangers, Ben used to take a neat step backwards if anyone tried to pet him without a proper introduction, but he was never aggressive.
For me their one big downside was not being reliable off lead, it's been said of them that TM's love being with their owners, it just that if they are in the same county, they class that as being with their owner.
They are notorious for bogging off, they aren't running away, they just want to know what's over that hill five miles away, and expect you to want to know too, so, let's go !.
As a guard, I found Ben second to none, he was a one dog neighbourhood watch, and would let me know if someone was thinking they may step out of their door, but he was never an excessive barker as long as I acknowledged his concern, then he was quite happy that I'd been alerted to the danger and his job was done.
Strangers who came in the house were given a cordial welcome after a ground shaking woof, Ben would stand between me and anyone I was speaking to, if we moved, he would move, and position himself between us again, that always made me smile.
My main experience of dogs is with SBT's and you couldn't get a more different breed than a TM, I wouldn't have another, much as I loved and miss Ben, the whole, having to keep him on a leash scenario, would put me off having another.
But if constant leash walks don't bother you, they may be the breed for you, that was the only downside that I found.
I should add, they also shed their coats like you wouldn't believe, and in the summer, hardly have any coat at all, certainly not the magnificent raiment of the winter, they also suffer from the heat, in the summer, I was up and out with Ben at around 6am, it just got too hot for him to walk much past 8am.