Possible to mix query strings with "clean" URLs?

[eluser]stevefink[/eluser]
Hi all,

I'm curious if it's currently possible to mix URLs with query strings without converting my entire URL schema to query string only. My problem is rather straight forward. I need to be able to support URLs of this nature:

http://example.com/controller?foo=bar

Is there a way to accomplish this without serious hacking of CI internals?