I'm curious if anyone has successfully implemented this, I have not yet had a customer request it. Using an 890 and x10 IR>receiver/converter or IR receiver, couldn't you place the 890 extender and X10 receiver/converter in the same cabinet and using the extender emitter capabilities (or one of the smaller emitters), circumvent the need for the line of sight Dark Knight mentions? I realize it's RF > IR > RF, but it would give the x10 control without the line of sight and using a single remote....without z-wave controllers.