OB Suitability Assessment / Clearance on VBAC?

I am seeing a midwife for my appointments & hope to have a her attending at my VBAC.  She is very supportive of my desire to have a VBAC & is helping me work towards my goal!

I had an appointment with her today & she said I need to meet with an OB so he/she can assess my suitability & give the go ahead (or not) for a VBAC.  She is going to make the appointment for me for a month's time.

I'm sure it varies from state to state, & even hospital to hospital but just wondering if anyone else experienced this.  And if so what kind of questions you were asked or was it just physical assessment?  I did ask my midwife but she was kind of vague, just saying that they want to make sure you are a suitable canditate.