Panavision in fact was one of the few major rental houses that helped me when I was a student and later when I was starting out shooting very small movies -- their attitude was that someday these student were going to be customers. It helped that they had one of the largest inventories in town so they could afford to be generous. Even today, you're more likely to get a better rental rate at Panavision than from the other major rental houses. On my first feature, one year after I graduated, which no one was getting paid for, our cameras broke down so often from the place we were renting from that we called Panavision in desperation... and they leant us a Panaflex package for free to finish the movie on, sort of treating us like film students who needed a break (which we were more or less.)
That said, their model is rental-only so anyone renting an entire package from them has priority over anyone wanting a few piecemeal items, and considering the popularity of their anamorphic lenses, they are almost always booked so even if you are renting Panavision cameras, there is no guarantee that anamorphic lenses will be available. So anyone who just wants to rent some anamorphic lenses from them is going to be way down the waiting list.