I would always condition the leather, in fact i do the Evoque and TVR on a regular basis. I do use different products on both. A scented balm on the Tuscan and a more waxy product in the evoque, mainly as the wife doesn't like the smell of the balm, Personaly I find it Devine.
Tuscan gets Gliptone Liquid Leather, cracking product but the smell is unique (apparently a leather smell) I love it and enjoy sniffing my hands all evening.
Evoque gets a slightly differ product from Cambridge Concours. Simon proprietor of Cambs Concours is a cracking chap and full of information, a quick call and he will sort out the best product for you. He works on a lot of very high end cars for some famous owners one of which is an irritating ginger haired chap and another use to work on a popular TV car show....... and as said Simon is a really bloody nice chap too.