I am ALMOST positive that half links only come in 1/8" and not 3/32"... can anyone say otherwise on this?
So then you have to change your chainring and rear sprocket to 1/8" (BMX) or you will start getting serious sloppy chain play. I dont know if this is true or not but I was told that a few fixies ended getting "F"-ed up due to riding a 1/8" on 3/32" gearing due to popping a chain into the bad side of the wheel on a descent... not something I want to find out the hardway on. Anyway...

Also there are hard as hell to find and have to special order them from a bike shop unless you are lucky.

Also, every track and fixed rider that I have talked to, especially the ones that have professional build experience say that 1/2 links arent as strong as regular links for some reason... the torque output on a track/fixed compared to that of a geared (derailleur) is expotentially greater, blah blah blah.

So some of this is heresay and the other is unfounded opinion.