Has anyone done an integration with recent versions of Episerver Commerce and a PunchOut system, and if so; how did it go?
I'm not sure what you're asking for. Are you looking to integrate with a 3rd party solution like Punchout2Go, or are you thinking of implementing it all in epi?
We have a solution with no 3rd party dependencies supporting both cXML, OBI and OCI which will be available as an addon very soon. If you're curious, drop me an e-mail at firstname.lastname@example.org.
This very early in the process, but if we move forward with this and need to know more, I´ll surely send you an email to know more about your upcoming add-on.