Akka.Net: Custom table schema for EventJournal in Akka.Persistence.SqlServer

Question

Is there an easy way use your own custom table schema when working with Akka.Persistence.SqlServer in Akka.Net?

There is the option to replace the QueryBuilder and QueryMapper, but I can't see a way to replace the default JournalEntry implementation in the DbEngine.

Edit: Overriding the CopyParamsToCommand method in an inherited version of SqlServerJournalEngine could work? But how to plug that in?