I had my two Skype interviews 2 evenings ago. I found it quite stressful, being as there are so many elements (like the connectivity!) beyond my control. I set up my computer elevated on a pile of books, put up a backdrop and moved a lot of lighting into the area to make it seem more professional.
I spoke with an accounting professor in addition to the Associate Director of the MBA Program. Both were really nice. The professor was an Aussie! Overall they asked the questions you would expect: why now, why HKUST, what do you bring to the table. The Asso. Dir. asked more in-depth questions on my work experience. They also both asked what other schools I was applying to, and why. Overall I think my interviews went well, at least I hope! I feel like they are moving quite quickly and might even know a yay/nay by Xmas!