Interesting idea, reasoning?
I saw Isildur1 do it once.
But mainly because I like to rep that I'm trying to push villain off the pot with his incredibly capped range, with my range that shouldn't really have improved (showdown equity) that much from a range that checks the flop behind. We get cape'd a lot more in my experience.
I find these situations very difficult to describe in words, they are incredibly psychological situations. You obviously do lose immediate value a decent amount of the time, but not as much as you'd think. If one can correctly manipulate ones body language and utilise correct eye contact, you lose immediate value even less.