While working for an ABC Station as Director of Operations and Engineering, I was privy to the first confidential memos and emails related to this "grab". I can't reveal the exact content, but I will tell you that there were three proposed courses of action presented to the Commission, and none of them were to eliminate UHF, or to force Broadcasters to go to Low VHF. This however alerted me to go into poractive mode. At that time I desided to redesign my flagship DTV-2D antenna to receive V pole 700-2550 mhz broadband.
Knowing that there would be some moves to VHF (high and low), but not when and where, I desided to devolop and test some methods to add as needed dipoles to accomidate the need as it arrives. I have no problem with your proactive advice to go all channel all of the time. I only wish that you had no problem with mine.