I have not found that leather saddles are in the majority even in the touring community. At least that has been the case among the folks I have met on tour. Personally I am not a leather saddle fan. If you like them great, but don't think that you need to go that route because that is what touring riders do.
I have generally been okay with the saddles that came with my bikes and have gone coast to coast on a couple of them, but my favorite is the WTB Volt Race 142. I have them on a couple of my bikes and they work well for me. You may well prefer something else, but I Ill suggest that in the beginning it often has more to do with getting your bottom acclimated to the saddle than anything else.