Holy **** :eek:
I remember when I was a kid, I saw these fingerless gloves that had little spikes on the knuckles. I thought they were the most bad ass thing ever (I was like 8 at the time). Anyway, I tried them on in the store and was like "whoa, you could punch someone with spikes while wearing these!" So I made a fist with my right hand and softly punched my left palm as a test strike. I instantly realized that there was no padding behind the spikes at all and instead you could feel the rough back of the metal pressing into your knuckles. They were 100% decorative and if you actually punched someone with them, you'd probably do more damage to your own hand than to the other person.
http://i.imgur.com/Duxgq.jpg
I assume those gloves you posted are actually designed for punching.