As above really! Obv saddle soap ain't it!! What happens if it rains?! Never really wanted one but there is one on offer that is everything else I'm looking for!!
I think there is a Scotchguard that you can spray to make it a bit shower proof, I would get some foaming suede cleaner for shoes to clean it, I assume that it will wear in to a shine eventually where you make contact with the saddle. The one I had only had suede panels I don't think they look as smart as a normal leather one, but should give you better grip.