WOW, it's been over a year since this happened?! Well, to give you all an, it's still pretty much the same.
More specifically, the hardness of the leather didn't really go away, but with time and reintroduction of my girlfriend's arse, the leather has crack at the seams of the threading. The yellow foam/cushion is partly exposed, but it's not that bad, and not too noticible. I do plan on reuphostlering both of my seats some time this century. This will make one hell of a DIY with some leather hides I can buy from a provider. I'll try to post some pics of my current seat condition.