You can add the top XX interfaces by traffic to the Node details view. Will this do the trick? I don't think you can specify a single interface without that specific interface showing up on all node details views.
If the Top XX works then you can assign that customized view to only switches using "Views by device type".
You can use the following to setup a resource that only includes x interfaces:
Percent Utilization of All Interfaces
Current Traffic on All Interfaces
Then set up an SWQL filter similar to this...
NodeID = 'N01' AND InterfaceName Like 'Tunnel1'
The Filter help has a list of all of the properties that you can use including InterfaceID, NodeID, etc.
That worked perfectly, I had to put in a custom SQL statement as we have a few custom properties but it does exactly what I needed!
Thank you :)