I'll believe it when I see a published ASICMINER mining address, or an AMHash mining address, or any kind of proof of mining - assuming they are self mining.
Id like to see the amhash ID too. Supposedly they are mining on ghash.io, see the chart halfway on their homepage:
http://www.amhash.com/Im assuming thats not a fake chart, but would like to verify.
That doesnt say much about the relationship with AM though. Its clear as mud as to who is taking the mining risk (and reaping the rewards).