The only limitation of this design method is that you will not be able to see the EZRound design applied to your pages in the NetObjects Fusion LOCAL PREVIEW mode.
This is simply a limitation caused by the way NOF manages objects added to the master border.
The good news is that the LOCAL PUBLISH mode works fine.
Users of software other than NetObjects Fusion do not have these limitations.
If you are using a tool like DreamWeaver you can simply split the code generated by EZRound and insert it directly into the HTML as shown here.