I am leery of the long term affects of this. I can def. see the soap doing a good job cleaning, b/c it is soap after all... but isn't pledge for wood?
...
just found this with a quick google search!!!!!
--------------------------
Pledge and furniture polish contains silicones that will seal the finish on the leather which will cause long term damage and so should be avoided at all costs.
Using household products and 'old wives' remedies are very short sighted when it comes to cleaning and caring for leather and can become very costly in the long run as problems they generally cause will be costly to put right. (although it does keep people like ourselves busy as we rush round fixing problems caused by using the wrong things!!!)
From here:
http://answers.yahoo.com/question/index?qid=20090113120352AAxg9mX