good suspension setups from std bikes do take longer to come to the tuners grubby hands as bruce points out, also rms are only just starting to get a good name for the bikes and so not many are sold.
i would guess the rm linkage rising rate is different to the cr, as the cr is normally a bit agressive towards the end of the stroke.So the stacks may not work if transplanted into each other.
The rm 125 has the least low speed of all the bikes i have serviced, however it wasnt what i would call plush.