Contacted via linked in. Did a brief phone screen, followed by an in-person interview sequence.
Had a cordial non-technical chat with a professional and polite engineering executive. I then spoke rather generally about Python, Twisted, and my work experience with a senior developer/architect. I hadn't yet polished my presentation for this job search, so I didn't make much of an impression on this interviewer with my meandering and casual style.
Next was an unpleasant discussion with another high level developer/architect/founder type. Appeared to become testy after I made an innocuous comment about block drivers and data verification, apparently thinking I was questioning one of his points. I couldn't recover from this perceived impertinence and the interview sputtered to an awkward conclusion. I was politely led from the building.
A crisp, factual, and energetic presentation would probably serve you well with this group. Looks like a strong team and an interesting product, so it might be worth making the effort.
(The blacked out windows made the building a little dark and depressing.)