I saw those as well but decided that the option with the exhaust pipe cut outs would probably do the job better - guess I'll find out how good the ones with the cut outs are soon - Royal Mail tells me they're on their way.Well spotted by Demongroover #15.
Motoworks do indeed sell them.....look under mudguard, check which type are suitable for your model of bike.
Quick link:- Motorworks