It's called 'always looking on the bright side'! LOL! But he's like that in real life too, a thoroughly nice bloke.
As for Lorna, she does a cracking job; remember viewers aren't necessarily horsey so to confuse them with technical jargon could turn them right off watching anyway and that's the last thing we need; we need as many to watch as possible else we won't get the chance again, especially on BBC; we don't all have the option to have digital/Sky, etc so for the greater good and all that let's keep it simple and enjoyable for all, IMO.