...if you assume the least useful interpretation of the comment. Could having a real physical object to examine be useful?
The paper as a "backup" is worse than backwards, it's an excuse to implement electronic voting, and since there is "no evidence" of problems, why would you need to examine the paper anyway?
Also, I think you're misunderstanding. The "no evidence" conclusion comes from auditing the paper ballot (as Schneier points out in that blog post above). You don't get to say "no evidence of problems" until the electronic & paper ballot agree. If there's disagreement you don't know which method is right & thus you have to hold a new election.
Then just use paper.
Recounts (which is what your suggestion will get called in practice) require legal maneuvers which are fought by the winning side. Adding a electronic component to voting will never lower it's complexity.