If I succeed in getting my MR3020 working in WISP mode with OpenVPN, I will post a follow up in this thread.

Added:

It works! Pete S. talks about an installation in the comments section that uses the mode switch and LEDs very elegantly. He was kind enough to share his files with me and I will be happy to pass those files along if anyone is interested.

http://www.loganmarchione.com/2014/1...ink-tl-mr3020/

This device has an easy to use FailSafe mode for recovery that does not need a serial port connection that I can verify works, having had to use it several times