Make Skydome HDRi show in viewport?

[litote]

Is there a way to show the Skydome HDRI in the viewport? I notice material textures also don't show -- presumably this is a limitation of Arnold?

Also, is there a way to convert a colour HDRI to B&W (parameter or connect a node to olour correct)?

[Stephen.Blair]

Limitation of HtoA, yes, but not Arnold. Arnold is the core renderer that knows nothing about any host application.

[Stephen.Blair]

If you post a new question for the second question, I have an answer