For what it's worth, I used to ride a half-link on a BMX bike, and it did not make much of a difference even when I was beating on it. I also put in many miles on it (it was my only ride at the time) and never had a problem or noticed a difference. The only advantage was that it allow me to run pretty much any gearing I wanted with smaller dropouts. I eventually replaced it with a KMC Kool Chain and noticed no difference.
Now I ride a Black Market Mob with some generic KMC single-speed chain, and I also beat on this chain. I also commuted 10 miles round trip with hills on this bike for a long time. Never had any problems. Maybe I'm just lucky.
I did have the problem that Jackon had with the creaking, but giving it a spritz of Superlube once in while did the trick every time. I've never heard of anyone comparing half-links to normal chains on a bike with an internally gearing hub. If you're willing to drop the coin, I say find out what happens.