I'm fairly sure I never used to rip so many tyres running tubes. Or at least, when I did, it didn't matter.
As for the pinch thing with tubes/tubeless, yes, you do get the same punctures, but it doesn't usually need a new tyre! I think tyre sidewalls also wear faster tubeless – you get those little diagonal lines much earlier than usual – possibly leading to punctures quicker? I also think the tube does support the tyre a little, especially when you're running it around 40psi (I always had to run around this with tubes).
As for riding style, I definitely ride 'heavy' (I'm not – I only eigh 11.5 stone!). I tend to ride in a fairly clumsy manner, fairly fast (off the brakes over rocks kind of thing), so yes, I am at least part to blame!
Anyone ever had issues with tyres blowing off rims? I've jsut stuck a kevlar high roller on the back and am properly nervous about it after my last experience with a kevlar maxxis! (Usually use steel-beaded ones.)
The only bombproof tyre I've found was a dual-ply steel-beaded HR. But that's not so good around the Peak.