Arlyn, Chad, John, and Christopher -- many thanks for the offers! I've been plugging my gear into geargrams for the past two, three days (lots of weighing!) and I waited to respond to your offers to help to make sure that gg does what I need, and it does.
OTOH, maybe one-a you spreadsheet wizards has an awesomely nifty setup. What if I used gg's .csv export function to extract the data, and emailed the file to you, you could see how to set up an import filter for gg and populate your Open/LibreOffice template with the info.
It's probably nowhere near as exciting as it sounds.