I ran this by the local group and so far they're sticking with no to infiltrate a unit and yes to join a unit in reserve and give it outflank... shot emails to a couple TO's and asked for a ruling on how they will treat this at the upcoming events this year. Can't seem to find a solid ground with this!
It's not a big deal if that's how they want to handle it. The book may not be crystal clear, but the intent is.