Yea it's still supported and works, however, there have always been issues with it. So you need to decide if it's really a value or not in your Org. If you have email scanning at the gateway then this is redundant and not needed.
This is nice overview provided by TORB on it:
https://www.symantec.com/connect/tr/forums/sep-add-crashing-outlook-2016-windows-10-workstations#comment-11934131
It's supported but if it causes issues than it may be more trouble than it's worth.
Also, this, from John_Owens:
https://www.symantec.com/connect/tr/forums/sep-add-crashing-outlook-2016-windows-10-workstations#comment-11934491