What do you get when you combine a method for remote debugging Zend Server from the CLI and some creative javascript handling? This updated tool from Davey Shafik, a toolbar item for Firefox to link directly to the debugger on the Zend Server.
Then, edit its link (Right click > Properties) and change the debug_host to your own IP (this link has it set for localhost). Your IP must be in the zend_debugger.allow_hosts php.ini setting for this to work.
Simply drag this link to your Personal Toolbar: Debug in ZDE
The end result is that you can directly debug the page you're viewing without having to fool with going the long way around with the debugger.