I am with those who believe handling patina in all part of a gun's history, and I don't believe you will ever prevent gradual wear to the blueing from handling, especially on a s/s where the forward hand directly contacts the barrel metal.

One very good wax is http://www.picreator.co.uk/articles/3_renaissance_wax.htm - but I don't think you will find it easily outside the UK. However - it is really more for preservation in storage rather than protection in use.