Michael
1. It does, but wouldn't this fall outside the "in between Missions action", as it would occur during the mission (say, buying any avail 12 item that might be needed for a particular mission but that no one on the team has, like plastic explosives, or a simrig to record events, or whatever else might be needed)
Actually, re-reading the FAQ I just noticed that the paragraph you refer to actually states "I want to do X, which can be done in game or as a downtime action. Do I roll skill dice or buy hits?" with the answer that buying hits are used. This includes buying items, and seems to be a VERY broad definition (anything that can be done during downtime, basically); it also nearly invalidates buying items as a character, simply because a contact will be better than a character without very significant investment (Charisma 6 + Negotiation 6 still only gets you 12 dice or 4 hits, though a specialization and the Exceptional quality might raise your dice pool all the way to 15 from the get-go)
2. Agreed, my assumption is that the 7 karma limit still applies, so some sort of confirmation is exactly what I'm looking for (hopefully with an updated Contacts sheet)