Proposed Postwar Layout Command/Traditional Question

Reverse loops and isolated blocks will work fine in command if they work in conventional.  No changes needed.  Likewise if you want to control conventional trains via the Powermaster and the cab-2, no changes in wiring to your conventional layout will be needed.  So wire it for conventional if you like, and command will work fine as well.

If you already have some`50's engines convert them to TMCC command and run them on your command layout that way. once you start running other trains on command, you will never be satisfied again with conventional control for your`50's era stuff. I noticed in the For Sale section 5 LCRU's are available at a pretty fair price. They are easy to install in `50's era locos and provide basic command control.