Not that I prefer it, but I've used tons of dusted crystal, and ikarasu is down playing how freaking invisible the stuff is after masking. "Is this side up?" gets asked repeatedly. Any more I'll trace out key elements with a pencil when I'm done masking so I can measure without hating myself.
I did get some mactac for a printed set of doors, worked great, though I was sure I'd screwed up after install, as there were a ton of marks in the glue after removing the mask. A week later and it all settled into a uniform finish, but I was sure I'd be redoing it when I left site.