At this point we suggest you going with your own tables and procedures.
The Fluent API will come in hand very soon. The benefits will be that you will do everything from one framework and will not have to maintain custom code or DLLs between upgrades.
The Fluent API must work in all cases, and with different providers. Having that said, you may have different connection strings for the different providers, and this way you can access the different instances you have. It's possible even now, by using the App.Prepare('providername').WorkWith() code.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items