The rubber comes off easily. Without ripping or tearing. But the glue underneath is a nightmare. I didn't get that off at all. I tried carefully with the most powerful resolvent I know (thinner), but that didn't work. It doesn't matter really. The doublesided tape on the front right part comes off easily. This has to be easy since this part must come off for top removal.
Beautiful! I remember reading somewhere that when stitching stingray skin, you can experience many broken needles--tough stuff, indeed!