Location of Flex Applicaiton Folders using web adaptor in DMZ

I hope I am not reposting a question that has already been discusses, but I did not see it…

We have just successfully configured the Web Adaptor located on a Windows 2008 Server in a DMZ back to a ArcServer 10.1 inside the network. The forward facing web server also currently works as a reverse proxy to the existing ArcServer 10.0 instance. (Btw..We found that having both servers using binding to port 80 only works if the default name of the Web Adaptor is not the same as the existing service).

We use the Flex Viewer application to serve out the map services via the internet. Currently (using version 10.0) the Flex Viewer folders are placed in a virtual directory on the ArcServer 10.0machine inside the network..This works well as the forward facing web server is the reverse proxy to the application.

With the Web Adaptor (Version 10.1 SP1) loaded on the forward facing web server, it seems possible that the flex application can reside on the server in the DMZ or the internal GIS Server.

Is there any advantage gained or lost by the flex viewer application older residing on the internal GIS server, or the Web Server in the DMZ?