Close... but no cigar
Before we proceed any further, I must say two things:
1) thank you all guys for your support, advice and best wishes
2) we have been genuinely married for over 5 years now and I guess it shows:
Now the story:
We arrived some 10-15 minutes early and were placed in the waiting area together with some other 30 people. Nice, quite, conditioned area with access to toilets and drinking water.
We were called some 20 minutes later after submitting my interview notice to the receptionist. The IO was a white gentlemen in his later 30s (I guess), rather friendly albeit professional.
He administered the oath, had us seated and verified some very basic info: kids, current address, types of visas I earlier had (these he photocopied) and stapled my I-94 into the file. He asked if we brought anything to prove the marital relationship and we did bring a lot of stuff - he only took joint dental insurance, health insurance, car insurance; wasn't interested in taxes (said they have them on file already) and never asked about the photos or bank accounts. Strangely enough, he did not even ask the standard "no" questions about being in a gang, being a communist, terrorist, prostitute, etc.
Before I even asked, he said that my NC has not cleared yet and they (DHS/USCIS) have no way of knowing when this may happen.
All in all, the interview lasted less than 15 minutes of which 5 I was trying to get some guidance from him as to what I can do about this name check thing (not much if anything at all).
I'll be posting again after it does clear but do not hold my breath - given the history of delays with my AOS, it may take years...
Good luck to all of those intervewing tomorrow
in the same place
UPD: Forgot to mention, online status still does not show any LUD changes and says that the case is at NBC (I saw that large thick file in Phila with my own eyes).