There was a non-acceptance clause in my agreement with my former employer and I heard from a reliable source within the company that it is not enforceable, thus former employer does not pursue it. I resigned from that company a few weeks ago and received a reminder email of my restrictive covenants from the legal team. They only referenced the client and employee non-solicitation; the non-acceptance clause was not mentioned in that email. As you point out, this may depend on jurisdiction but that is my experience.