Is it possible to run both debuggers within the same PHP installation simultaneously. They both use different ports so communication with the client IDEs/other apps wouldn't be an issue.
I ask only because using the Zend Debugger with ZendStudio has proven to be much easier (fewer steps to start/stop debugging from the browser), but I really like some of the profiling tools available that only work with XDebug. So in a nutshell, I would love to be able to have the best of both worlds if possible.
http://www.suspekt.org/2008/08/04/xdebug-203-stealth-patch/ (in particular the last comment) seems to indicate that the profiling parts of Xedebug will work fine alongside Zend Debugger, with the patch installed.