I had mine today. he asked about a particular piece he liked, complimented my artist statement, asked why SVA, why grad school and ultimately if I have any Qs. then what other schools I applied to and gave me his opinion of those programs, which was kinda weird IMO. All the 'prep' I did was largely useless and psyched me out a little bit. I'd pause after answers and not rush through it if you can.
overall it was quick tho, not like an interrogation or anything. mark tribe is a nice dude.