The HTC Hero is said to have an oleophobic fingerprint resistive touch screen like the iPhone 3GS. The oleophobic coating is supposed to repel oils from your fingers thus reducing greasy fingerprints on the screen. Below are a few photos of the Sprint HTC Hero and the T-Mobile HTC Touch Pro2. The Touch Pro2 is using its included screen protector while the HTC Hero is using only its fingerprint resistive touch screen. Both are illustrative of normal finger usage with no attempts to clean the screens.
Can you see any difference?