Substance Maya Plugin - Color Management

Hi there, been trying to use Substance Maya plugin in 2020. Using Vray - Next. 

But ran into a few problems upon importing the sbar. 

Firstly, i'm using a specific color transform (sRGB (ACES)), and whilst this isn't a problem for textures, since I convert them over to a utility sRGB texture color space automatically using the colour space rules, the substance plugin however gets confused and freaks out. 

I import the sbar fine, click on the node in the hypershade, and create a base color output. This is where it fails. The imported file is pink, and for the life of me I have no idea why. It imports the file with a sRGB color space, something that my custom OCIO config doesn't support since I have a custom one, but that isn't the problem, since if there's no specific color space to apply then it will just default. 

The issue lies between importing the texture and creating a link to the material itself. I've included some pictures to illustrate whats going on. Does anyone else use a color space like ACES with the Maya Plugin and have no issues? If so, I would like to know what I'm doing wrong here. 

Perhaps I need to do some pre-conversion for the color transform in designer before I export to sBAR? I don't even know if that will work or would apply here. 

For now I'll continue to create everything manually. It's not too much of a hassle for me, but it would be nice if these things worked.