Hello,
Still eagerly waiting for the ability to edit orthographic documents from Rhino. I'm currently still paying a ton of money to Adobe entirely due to the fact that Affinity Designer doesn't support old Ai file importing.
I started a thread on the Rhino forums, and the Mac developer was very interested in supporting a .afdesign export function but he was not able to find any documentation or SDK that could let them even start.
Here's the thread:
http://discourse.mcneel.com/t/export-to-affinity-document/22871
Please help get this started soon! If this is implemented, I know a ton of other Mac-using industrial designers who would gladly drop their creative cloud subscriptions and adopt Affinity software—you can even charge for a plugin and we won't mind!