We used Google Docs / Word Docs for proposals prior to implementing Octiv, which caused two problems:
1) They looked terrible.
2) It was hard to maintain a standard format for proposals team-wide while still giving individual AEs the ability to customize proposals.
3) We couldn't get any intelligence (when they viewed the proposal, what they looked at, etc.)
4) Lacked an electronic signature.
Now, our proposals look great and really 'wow' prospects, they're easy to customize within pre-defined templates, our reps can follow-up based on when proposals get viewed, and our close rate has increased since we're no longer collecting scanned signature pages.