I asked bike24 again about the 2.2. It appears that both the 2.2 and 2.4 UST’s will be offered with the sticky compound (2.4 chilli available now obviously). Here is the reply I got today.
We thank you for your request at Bike24. Only the tubeless version of Rubber Queen 2.2 shines with the allround BlackChili compound.
Best Regards,
Mario Richter
Bike24 – Service Team Bike24 GmbHEnderstraße 9401277 Dresden