Replying to Hackel Pro Sharpie?

I know you can (and are supposed to) use sharpie on these skis, as confirmed by ON3P's instagram who confirmed that Hackel uses sharpie on them himself.
But, now that people have started skiing these, are there any issues with the ink bleeding from water on the topsheets? I don't really want to go to town on these skis just to have the designs bleed off on a slushy day. If this is the case I might draw on them and then paint a layer of some kind of preservative on the topsheets before having them mounted.
Also has anyone tried fine point sharpie? Wondering if that works with the texture of the topsheet.