RME.NET, Anyone any experience ?

Guys,

Our large(ish) project is about to kick off.  The tool of choice  is the IBM toolset for Business Capture and Analysis, Use Cases, Design etc.
Clear case will be used for CM control.
Visual Studio (Was 2005, hopefully now 2008) for Software Development

We are about to start a small study into using RME.NET to link the Rational Software Modellor system to Visual Studio.

Rational Software Modellor
RME.NET

I am going to push v. hard for VS2008 as our development environment.

My question is twofold.

1.  Does anyone have any experience of using Rational Software Modellor with Visual Studio integration via RME.NET and if so, is it considered valuable, will it support all the richness that raw C# gives you (Attributes, Delegates, partial classes, all .NET Types etc) or does it support only basic Class Design and simple types.

2.  Does anyone know if it integrates with VS2008 or whether the API's published by VS2008 to allow integration by tools of these types have changed from VS2005.

Any experience of using an "external" design tool like Rational Software Modellor with Visual Studio would be gratefully received.  Especially in areas such as "does it add value to the process", "Is it a view on the code like the built in class designer", "Does it fully support all the .NET Types and constructs".

Thanks for your time

Mike Read