Snakeskin pressures

Sambuca

Just fitted a pair of 2.35 Schwalbe Hans Dampfs and have found that even running very low pressures (20 psi) that they hardly deform at all- I'm running them low to try and get the grip I was expecting although it was super wet on first ride, anyone running these and at what pressures are they working? Running tubeless and don't want any burping issues....