I just tested out the PScrap field in Bering. It's pretty good, actually - Even in a Wrecker, it feels nearly as good as the field in Texas, except now you don't have to worry about radiation damage and constant nebula lightning flashes (which gave me a massive headache). Junkers are by default a neutral party in the first place, so I wouldn't imagine the Unioners or Seperatists giving you too much hassle, if all you stick to is the PScrap as opposed to the Military Salvage. Vulk mined in a Collector, which had even better yields since it's a snub, and more hardpoints for mining than a Wrecker (A CSF would work nearly as well for team mining).
The Congress is still neutral in the Bering conflict, which may or may not influence independent Junkers being treated as neutral within Bering, as well.