'We' (ie me and 4 others at work) tried to enquire about this as we do have a local b2b contact at our local store.
Bare in mind this is UK, so might be different policies oversease.
We were flat out told our company could not order the iPhone 6 separately, have access to any special discounts or separate stock allocations. As all stock is being managed by a regional (country in this case) centre, they had no idea how many units their branch would receive and were not able to allocate any for us.
We were advised to order through the website as with everyone else.
It seems even if you really spend with Apple, be it £20000 or £1,000,000 a year, there is nothing their business team can do.
While I agree it's fair to treat everyone the same, I am reading that phones ordered with a contract or by 'loyal' contract customers on certain networks are given priorities and the double standards here are somewhat disappointing.
In the office we consider Microsoft and Apple equally as arrogant and frustrating.