Wafer-chip... same thing.. wafer is just a whole bunch of chips not cut out..
And not packaged...
Not a small difference, ask BFL.
BFL ain't really a valid comparison. They did EVERYTHING bass ackwards, as near as I can tell.
The chips were designed in partnership with OrSOC, who already have a long standing agreement and history with the fabs. It is unlikely, due to past history, that they will have problems with customs. BFL and Avalon were unknowns to the authorities. One is a startup with a bad rep, the other a group of students with NO rep. OrSOC is an established entity with a decade of experience, and likely has dealt with the customs agents in the country of origin many times.
Also, on the Avalon side, there is a long standing enmity between the ROC and PRC, so they might hang up things coming from Taiwan to Hong Kong just because they can, whereas Taiwan and Sweden have no negative history, thus are less likely to be targeted.
All of the above, regarding customs, is speculation on my part, but it's based on my knowledge of the countries involved. I don't see it likely that customs will be a hangup. I have purchased things from Taiwan via internet directly to the US, a much longer delivery, and had NO problems. And I am not a well respected electronics design company or their affiliate. The possibility always exists, but it's pretty much worrying for the sake of worrying.
Further, all of these concerns apply to the other ASIC manufacturers as well. If customs is LIKELY to delay them, then they are likely to delay them all. Since KNC is the first on the market with 28nm, and if they are not hung up by externalities will be the second to deliver on promised time, then why sweat the externalities? It does your sleep no good at all.
I am not entirely convinced that Avalon really did have customs problems, other than the documented thing with PSU's. They acted in a distinctly shady manner after batch 1, so it could be a CYA move on their part to blame customs. FWIW.
If one is delayed by customs out of taiwan, it's likely all will be if they use that fab. If they aren't, then the only delays are internal. They claim to be on track to avoid the internal ones. We're looking at about a week and a half according to that update. CHILL.