Pretty much all tire and bike manufacturers recommend replacing the tire if it gets a hole anywhere. If they recommend a plug (even temporarily) and something goes wrong, the could potentially be liable. I do know that Suzuki does allow a patch if it is installed from the inside, covers a one inch area around the hole, and also has a plug that fills the hole.
Also, as an FYI, due to a customers tire failing after being run on a Dyno, you WILL void any warranty (limited as they already are) on Dunlop tires, if you continue to run it after it has been on a Dyno.
Personally prefer Pirellis or Avons, myself, but imagine the same would apply with the Dyno there too (liability again).
Chad