Frans Bouma is the creator of the very popular LLBLGen Pro O/R mapper for .NET. He just posted a nice walkthrough showing how to use the new version of LLBLGen (which includes some really nice new ASP.NET datasource controls for UI binding) to perform the same scenario I showed in my DLINQ post last weekend.
One of the nice things about the LINQ project is that it decouples storage and data modelling semantics from the LINQ query semantics and language support. What this means is that you'll be able to use LINQ to perform queries against multiple data-sources -- and any O/R implementation. So you will be able to use the elegent and productive LINQ programming model with LLBGen Pro, NHibernate, WilsonORMapper, DLINQ, or any other O/R data model you want. You can also use LINQ against your own objects/business classes like I showed in my first LINQ post here.
This provides developers with a tremendous amount of flexibility and knowledge re-use, and also provides O/R and data providers with great opportunities to innovate even further, and easily go after and target developers who understand the LINQ query language.
Hope this helps,
P.S. Paul Wilson posted a cool control on his blog a few weeks back that showed a nice ASP.NET datasource control that he built that allows you to easily databind ASP.NET controls against his WilsonORMapper. You can read about it here.