Sell it. Get ahold of esri or partnersoft both have iOS apps yet lack Mac support unless you run a VM. It maybe a harder sell as most of the industries that use GIS data (power, telco, gov) use windows. Your are in a premo spot though because Partner and esri are both pushing iOS for outside guys/field workers quite a bit right now even if it's only a bullet point for them it could be a nice pay out for you.