The shop was racingtrials (Spain). They have a sample bike in their website assembled with a Big Betty so I asked for it to come with the stock bike, but they told me there was a clearance problem with it.
I took their word for it, since the size in schwable tyres is very different from maxxis, I say this because I have 2.35 Fat Albert's in my DH rig and they're wider than 2.5 Minions in the same rim.
And since I live in Portugal, I had no way of checking their sample bike. (There aren't any real trial shops in Portugal)
I'm very surprised with the High Roller, because of the super tacky rubber, but when it wears out I'll be buying a Big Betty for sure. It's a huge weight difference.