Turning the question on its head, why on earth would you want to be tooling along at 300 KIAS below FL100 anyway?
You have to reduce to 210 KIAS at 12 nm anyway, so just what are you going to achieve by bashing around at high speed within the preceeding 20 miles or so?
Are you really so desperate to save 30 seconds on your block times?
You're just inviting trouble if you ask me.