Pure speculative play at this point. Bonds are still 10 cents on the dollar ..so yes there is a substantial risk on holding Preferred. Another consideration that hasn't been discussed much is the outcome of the Adversary Proceedings. We don't know yet where ORRI's & NPI's fall as to absolute priority. Their claim(s) could be a problem for all classes below DIP lenders.
Learn something new every time you invest...and take it with you to the next opportunity.