Do you live somewhere hot? If not then your bub will probably be in wondersuit type outfits when little so they won't slip when you hold them. You also need to remember that touching doesn't need to be all about your hands. They love to lie on your chest or in the crook of your arm. You can press your cheek against them. If you are breastfeeding then you will most certainly bond and show your love then.
You WILL find ways to cope and your baby will love you regardless of sweaty hands.