Who takes advice from these people?
Generally training and file format compatibility were not an issue. The initial draw to OpenOffice.org was not having to count licenses (so tedious!), and later it helped us switch half the systems to Linux (most on a terminal server).
One 'gotcha' was that the accountant needed Excel to use Quickbooks because it interfaces directly over a COM API.
The second in charge (an Apple fanboy ironically) wanted to switch to Microsoft. He didn't give a good case why.
To increase compatibility reading OpenXML, install odf-converter-integrator. To understand how it works, read "A Better Docx Converter".
Ya'll hear about the geometer who went to the beach to catch some rays and became a tangent ?