Are Shimano and SRAM 11speed mountain interchangeable?

[Ray Varella]

As a follow up question re; 11 speed on 8-9-10 hubs. 

Are Shimano and SRAM 11 speed cassettes and derailers interchangeable. 

David Person posted an article outlining the differences between freehubs. 

Assuming the SRAM cassette designed for Shimano HG is used, do I need to use a Shimano derailer?

If I use a Shimano 11 speed cassette can I use the SRAM 11 speed derailer?

Thank you 

Ray

[Philip Barrett]

Basically all interchangeable with some slight disagreements on the chain; match the chain to the cassette say some, pooey to that say others. 

[Ray Varella]

Thank you Philip

Ray