No, I don't think it will let you use anything except actual IP addresses. You could accomplish what you want in code pretty easily, though, by enabling debug output universally then disable it using the CFSETTING tag and a bit of conditional logic.
That said, you should not of course have debugging enabled in production as it will significantly degrade performance - whether users see the debug output or not.
Dave Watts, CTO, Fig Leaf Software
Thank you for your solution. That should work just fine. This is on a development server, and we have debugging disabled on production.