VS Team Services - State Model Visualization Extension

Daniel Mann provides an overview of using the RMWorkFlowMigrator tool to export a Release Management Agent based deployment pipeline so that it can be reused in the Release Management service in Visual Studio Team Services (VSTS).
You can find out more from GitHub, which includes guides and walkthroughs.
Check out Daniel's blog posts.
Just happened upon this Video and I am so happy I did.
We never did make the move from Agent based deployments and actually I'm a big fan of them.
Re-creating some of our more complex pipelines would have been very time consuming so I'm thrilled that there are tools to make this an easier process.
- Fergal
Just tried out the tool on one of our more complex deployments with a whole bunch of steps and it seems to have worked perfectly.
When the next release of TFS comes out I know it will have RM included as part of TFS itself.
If we don't have all our deployment pipelines converted over to Powershell can we still use a separate RM server for agent based deployments and slowly transition to Powershell and the new version of Release Management. So I guess the question is, will I be able to use both RM servers for a time while I use this tool to migrate? Im wondering do I need to wait on upgrading the TFS Server until I have switched over to PS but Im hoping I don't have to.