FWIW, the Fenix lights I've owned have performed flawlessly and are very durable.
I'll second that.
The pen light here looks quite useful for those who have such wardrobe considerations. I don't view Fenix as a company that makes gimmicky stuff just for fun. So, I'm guessing there's a market that will use this light like people use other Fenix lights. Maybe the few people replying in this thread aren't part of that market.