Thanks for the info...... I had been looking into that.
Basically the thought was ....
From the client, send data within a custom WCF header indicating to the service that it needs to start logging at a severity other than that indicated within the web.config ().
The service will see this WCF header and construct a EL logWriter using the Fluent Config API at R/T. This (I am hoping) will allow the server to log these client specific requests to our central DB.
Other clients (where no custom WCF header info has been injected ) using this service, will log at the level fed from the service's web.config file.
I guess my concern is can I isolate different logging strategies this way....... i.o.w. build one up at R/T using Fluent approach while other requests using the config as specified within the .config files