Hey brother, I think you're right the answer is no. Essentially this is for your own good :)

Mind if I ask why you want the Layer ID and not Object ID?

Object Layer ID pass (multicolor) gives me sloppy mattes, e.g. with extreme DOF situations. In AE i tried the color key and the EFX ID Select ...

Ok Brother! I think we were not talking about the same thing. But back to my question; i guess the answer is simply "no"?

So:

Object layer color (RGB mattes) + Crypto: Yes
Object layer ID + Crypto: Yes
Layer Masks (ID1 ID2 ID3 etc) + Crypto: No

Right? Thanks!

Haha ok. Sorry i can’t explain better either. It has nothing to do with the internal C4D render system, the layer ids are calculated by octane and works perfectly fine (also with DOF and motion blur etc). And slow cryptomattes in AE are a common problem, there is not much we can do about it instead ...

Yes sure, why not?
Just enable the desired info pass.
You can also use the Octane Object tag, assign a specific color to a mesh or group of meshes, via Object Layer tab, and enable the Object Layer Color pass in the InfoChannel pass section:

ciao Beppe

Hi Beppe, thanks a lot for your reply and ...

Old Layer Masks are not good, since are calculated by c4d internal render!
So they cannot consider DOF or Motion Blur, and can only offer a brutal b&w mask of the geometry.
They are very slow to calculate in c4doctane, compared with Octane cryptomatte/info passes.
They were added in c4doctane ...

Hi, is there a way to render cryptomatte passes plus Layer mask id's at once? Since cryptomattes are terribly slow in After effects, i would like to use layer id's for most objects and have a extra cryptomatte pass as a backup in case i need some extra passes/flexibility in post. Thanks!

Ah nice! Thanks for the quick reply Ahmet!

Have the same problem. The Object Layer Color pass is not something i prefer (not so nice edges). Is there a solution to just skip the "bonus" passes and keep black and white layer masks and denoised beauty pass? Thanks!

Allright thanks! Good to know

Sometimes i get this weird angular shading. Increasing the subdivisions makes the triangles and quads less visible (smaller) but still not smooth. Tweaking the phong angle doesn't help either. Has anybody any idea how to solve this? Thank you!