Which might be exactly what you want if you are troubleshooting HTTP issues with customers "Go to page X and tell me what it says" rather than "what is your IP"

Which might be exactly what you want if you are troubleshooting HTTP issues with customers "Go to page X and tell me what it says" rather than "what is your IP" is much more reliable. If there's a proxy, there's a proxy - but I can't troubleshoot the customer's connectivity issue without that.