I’m also curious about how well LibreOffice and Microsoft Office mesh, i.e. can you share and edit documents together with MOffice users if you use LibreOffice?
You can. But if the sender is the type to use linebreaks for spacing and textbox for grouping, be prepared that the layout may explode after saving and reopening the .docx in LO.
But that’s the formats (MS OOXML) fault, consists mostly of proprietary extensions, no such issues with .odt (ODF).