Just recently picked up TR to replace my OmniFocus and Outlook mashup. Being a user that lives on several different platforms during a normal day I have been looking for a real cross platform solution to support me.
Finding that TR is doing a good job providing me a platform for capture and processing, where I'm missing a bit is on the Reference part. This is where Evernote kicks in - I'm not looking for a pure Evernote integration - but merely a acceptance of the editor in TR to accept the ever not:// linking style names. Best would be if there were a plugin for Evernote :-)
So to keep things short - I'm currently having most of my cross platform filing managed in a mashup of several different solutions. Pretty much would like to move all references into Evernote and then have the TR Reference part pointing to into Evernote when needed.