Assigning a script to a keystroke can give you a copy with a custom format, if plain text is all you need.
The simplest kernel might look something like this:
Code:
tell application id "OOut"
set lstDocs to documents
if lstDocs ≠ {} then
set {dlm, my text item delimiters} to {my text item delimiters, linefeed}
tell item 1 of lstDocs to set the clipboard to (topic of selected rows) as text
set my text item delimiters to dlm
end if
end tell