I don't really like leather. The only upside is that they look nicer. Now the downsides:
It absorbs warmth and the cold, and releases it slowly.
It is hard to break-in, and it doen't have that effect in which your *** sinks a foot into it.
You always worry about cutting it.
There's my summary. And a lot of people consider me a whiner, so don't take my opinions too seriously. And I see you've already got a pair, so it doesn't matter