My PhD uni has a straightforward system of vouchers so I tend to get them from there rather than at work. I also have better (for my subject) access to journals at PhD uni than at work uni (which was a major factor in deciding where to do PhD) plus a few people are doing phDs at other unis so between us we are pretty much covered. Work uni does have a special library budget within the dept for books for staff research and only the head of Department and I have been ordering so I have done a big buying spree this monthto spend as much as I can before the end of the year.