C4 is using commentators and spokes-people with disabilities that reflect some of the disabilities incurred by the participants.
In some cases, they are considerably better than the mainstream sports presenters.
Ade Adepitan for example has been a brilliant commentator this evening. Informed, knows his subject inside out, has a good grasp of human biology but he's witty, funny, personable, watchable etc
Unlike Claire Balding who should be taken out and shot for getting overly excited by Sophie Christiansen (equestrian gold), who has a fairly obvious form of cerebral palsy and announcing "she's not just just {obvious gap of words} she's got a masters in mathematics, she's intelligent too".