Using X-Forwarded-for to block Clients based on URI information

How do you like to modify your iRule? The code snippet you have provided looks fine syntax wise, but it blocks access from IP's in your AllowList. How about something like this:-

when HTTP_REQUEST {
  if { [HTTP::uri] equals "/en_US/HHCM" && !([IP::addr [IP::client_addr] equals AllowList]) } {
      log output
     reject
  } else {
      Send traffic to your desired server pool
  }
}

Just an example. Correct me if I misunderstood your query.