string based https redirect

Ok, so the client has come back to me, as clients are wont to do, and said. "This is great, but what I really need is for everything other than those four pages to be forced to http."

So, I came up with this rule, to be implented on the https virtual server.

 
  
 when HTTP_REQUEST {  
    switch -glob [string tolower [HTTP::uri]] {  
      "*alumni/giving/gift/" -  
      "*alumni/giving/pledge/" -  
      "*alumni/directory/search.aspx" -  
      "*alumni/directory/update.aspx" {  
       don't do anything... 
      }  
    }  
  
    default { 
        HTTP::respond 301 Location "http://[getfield [HTTP::host] : 1][HTTP::uri]"   
    } 
  } 
  
 

Any comments?