Profiler trace on scale-out dataset

I'm trying to trace activity on our model that has scale-out enabled, but I believe by default SQL Profiler and DAX Studio connect to the read/write model, which of course doesn't have any query activity on it.

When I attempt to trace on the read model using ?readonly on the end of the XMLA endpoint, I get the error "The operation is not allowed by the Azure Analysis Services product as the current context is read-only".

What do I need to do to trace a scale-out model? Is it possible?