Hi insekt,

re:
> Is there something similar to Sub-D Multipipe in Moi?

No, not currently.


> If not, is there a workaround to achieve the same result, with or without the Node Editor?

You might check out TopMod:
http://people.tamu.edu/~ergun/research/topology/download.html

If you export out from MoI into .obj format then bring that into TopMod I think it has some different kinds of framing methods for generating structures around polygon edges.

If it is able to build an all quad structure you could then export that back out to an .obj file and use the MOI sub-d converter (SubD > Create > "From file") to convert it into NURBS geometry in MoI.

- Michael

Also the Skin modifier in Blender might be able to create a structure like that also:

https://docs.blender.org/manual/en/latest/modeling/modifiers/generate/skin.html

Or maybe wireframe modifier:
https://blender.stackexchange.com/questions/2838/create-a-rounded-wireframe
https://docs.blender.org/manual/en/latest/modeling/modifiers/generate/wireframe.html

- Michael

Yep TopMod is a breeze! :)
Some trys ;)
https://issuu.com/frenchy_pilou/docs/topmodYep




OBJ is now a nurbs object! And here with a little Subdivision in Moi itself!

Alright!

It feels like I've had all my questions answered.

Thanks for your help, everyone!