I know you're thinking about the Slick versus the Patent, but this might help too.
This talks about the Slick versus the Soft Calkskin Leather:
Texture – slick is much shinier than soft (matt). Soft is more supple than slick.
Durability – both durable, but soft calf maybe little more apparent when scratched
Timing introduced – slick was just introduced from Autumn/Winter (June 07), soft was introduced in Spring/Summer (January 06) as our classic Ramona
Grains can be seen more apparent in soft than slick.
Then you compare it to Patent, which is so easy to maintain. And this is coming from a maintenance freak, I have all sorts of leather cleaners and moisturizers etc.. So yes, aside from the make, you might want to think about your other priorities such as durability, maintenance, shine (?). And as Robyn mentioned, when it came out. Yes, those other factors. I have too complex of a mind in decision making - it drives the hubby.. patient. lol! :shame: