Pivot Switchblade sizing

I’ve ridden an older Switchblade and demo’d a new model, both mediums.

I’ve heard that Cocalis himself recommends sizing down if you like a more playful bike.

I’ve thought of trying to ride a small.
I’m right at 5-9. I currently have a large Sb100 that is also consider dropping to the medium.

Anybody sized down on one of these pivots with great results?