The same set of questions can be applied to DocuSign or other centralized e-signature services. The answer to most of those questions would likely be "yes", but

The same set of questions can be applied to DocuSign or other centralized e-signature services. The answer to most of those questions would likely be "yes", but more importantly that doesn't seem to stop the viability of this type of service. If plaintext contract acceptance grows then one hopes that the middleman could be cut out and we could eventually see adoption of standard developer versioning tools adopted by in-house legal/IT teams to wrangle the plaintext contracts. Other than plaintext contract tooling (which I know is a heavy lift), this workflow would then be no different than the current practice of emailing marked-up Word documents to each other directly until the clean copy is ready for execution.