The main problem is that if I want to export my scene in standalone application is because I want to set up lights, materials and all other things in standalone application. So if octane standalone is able to support alembic file format, an user like me thinks that all of standard alembic file is able to store inside itself, can be rendered by octane.
Effectively my first attempt was to export hairsystem like curves, in this way animation was read very well in octane but there is no way to control thickness of curves.
Luckily I have purchased also a license of maya plugin and I have made some attempts.
The problem of hair thickness is almost solved because the hair have thickness value that i set inside maya, but i can't adjust this value inside octane later.
"Default hair thickness" in object setting window inside octane still not working.
You have talked about "Octane hair" but I don't understand what kind of object is considered by octane like "hair" if even when I export via plugin this parameter still not work.
But most important is that hairsystem exported via plugin is not animated!
Hair is freeze at the frame that I'm seeing in viewport when I launch the export process.
This is a bug or what?
There is a way to solve it?
I've attached maya file and two different alembic (at different frame).
Ps. sorry for my bad english...

Thank you in advance.