@webbe: I have somewhat of a really close relation to Sram, both personally and professionally. Thus I went for a full Sram build. The Fox build works a treat though. Really good. Maybe give the guys at Mojo Suspension a call. Chris is one of the brains behind the Geo and they offer testrides, too.
@Luke-VTT: I personally prefer to run the Rockshox parts due to the ease of maintenance and familiarity with the products. Are you saying the Rockshox-equipped bike performs noticeably worse?
@webbe: No, it doesn't. The Lyriks is absolutely on par with a 36 if not better. I like it better in fact. The Monarch Plus requires a little gettin' used to and a whole different setup with way more SAG than I rode with the Fox shock, though. But it performs well on the frame, though the window within it is working perfectly seems noticeably smaller to me than with a Float X2.
www.nicolai-bicycles.com/shop/pdfs/Nicolai%20Tech_sheet%20%202017%20-%20ION-%20G16%202017.pdf