Wasn’t that same with all URT designs though?
Most URT designs put the pivot somewhere around the BB area for minimal effect on the sitting/standing thing.
By putting the pivot WAY up there, Klein deliberately turned their FS into a ‘FS when sitting/semi hardtail when standing’ bike. You could actually run.the Mantra with a rigid fork and the high pivot would act like a sort of hinge, offering suspension front and rear at the expense of the bike feeling like it was folding up underneath you…
Seemed like a good idea at the time I suppose. Plus they were certainly distinctive.