BIG-IP : iRule to route uri-forms for all hosts

I don't think there's any potential problems here with not checking the Host name. It just means that if someone's accessing the site by IP address or using something like a hosts file, it'll still processes the traffic the same way.

On another note, with the

event disable all

command, all further iRule processing will be cancelled for the life of that connection, not just the that particular request necessarily. (Just wanted to mention that since I had a few issues when I first started using that command). Is that what you're trying to do? or perhaps just ignore further HTTP_REQUEST events for that request?