I find that integration near-useless. Even obscure books (if available) tend to have a multi-month wait at my library. Since the wait times seem to be semi-random, it's basically impossible to queue up books in a way that syncs up to my pace of reading.

(I guess if I really wanted to, at my rough reading pace of one book per week, I could place a hold on two books per week, and on average every week I'd get two books available, pick one to read, and just cycle the other back into the hold queue.)