That sounds believable...
I got my pss10 on, and my mechanic set the ride height at 25 rear and 25.5 front (he just matched the 034 spring ride height). In the front there is tons of room to go lower, but the rear has maybe 1/3" lower max. In a week or so, I'll be back in for him to set the rake and corner balance.
The ride on them is fantastic. On 0F-0R it feels pretty smooth over bumps and has enough absorption to be comfy. They are much more comfortable than my 034 springs, by a massive margin. 2F-3R gives a sporty but smooth feel, a lot like a Porsche cayman. 5F-5R is very firm, but still tolerable. 10F-10R is very firm. On the stiffest setting, my back was aching after a particularly pothole riddled road.