Finally had a chance to try out the public library loan (had loaned my iPad to my husband for a trip) and it worked like a dream.
After all the things I had tried previously, I couldn't believe how easy it was. Downloaded the book from the library. Emailed myself the file. Opened it in Bluefire. Voila!
Very impressed with how quickly you were able to make this functionality available. Definitely a value-add feature.