Bag > [Required Clubs] You should be able to replace individual clubs with a alternate one you may have! Taylormade, Cleavland , Nike, or Ping!
Example:
similar to the [Option Clubs] you can switch off any clubs desired!
It would be nice, even if it were just one club. WGT has recently stated that it's unlikely to happen though. :-(
Because I am sponsored by PING I cant do that :)