What export option to use to get Rhino into Affinity Designer?

Thanks so far, should Affinity talk to McNeel or McNeel to Affinity.
or who sees the advantage and acts as mediator ?
I used to go from Freehand to Rhino.
I need easy vector and love Rhinos tools but Rhino cant fill in areas of colour then allow change of that colour via altering in a colour palette, as easily as a vector prog can, especially as one needs to use cmyk, try using Rhino for etch brass sheet designing for example.
Freehand cut a line was archaic compared to Rhino but Affinity is lacking in the snip dept when I last tried, major oversight. One has to cut in vector yet they had not foreseen that need.
Maybe they have fixed it now, I wish it was as per Rhino method.
Steve