What do I think?
1 I think 'The Invisible Man' clear vinyl (it's not white!) isn't rare at all.
2 If people would like to make a clock out of whatever record they have: why not? I couldn't care less.
Oh, come on. Wouldn't you cry if you saw a numbered Blue BoRhap disc used as a clock and the owner told you he threw away the Picture sleeve, broke the champaign glasses and gave away the scarf to his mother 30 years ago?
Never forget, any industrial vinyl or cd is just a copy of something, that is widely available. For me it's the song that counts, not the medium that carries it. Although I don't mind a good looking medium.
So if they turn a vinyl disc into a clock it may receive more attention than it would have had, if it ended up in the cupboard of some collector.
I would be worried if the original multitrack was cut into pieces and turned into a clock....
BTW...there was recently an exhibition in a german museum, where the floor of one room was covered with vinyl records and the visitors had to walk over them. It was a nightmare becoming real....it felt horrible...