The American Council of Learned Societies has released Handheld E-Book Readers and Scholarship: Report and Reader Survey.
Here's an excerpt:
This report describes a conversion experiment and subsequent reader survey conducted by ACLS Humanities E-Book (HEB) in late 2009 and early 2010 to assess the viability of using scholarly monographs with handheld e-readers. Scholarly content generally involves extensive networking and cross-referencing between individual works through various channels, including bibliographical citation and subsequent analysis and discussion. Through past experience with its online collection, HEB had already determined that a web-based platform lends itself well to presenting this type of material, but was interested in exploring which key elements would need to be replicated in the handheld edition in order to maintain the same level of functionality, as well as what specific factors from either print or digital publishing would have to be taken into account. As sample content, HEB selected six titles from its own online collection, three in a page-image format with existing OCR-derived text and three encoded as XML files, and had these converted by an outside vendor with minimal editorial intervention into both MOBI (prc) and ePub files.