FYI... Posted to a reddit thread by user Bulls729, there's a new MoCA-based device in town...
Frontier FMT25A MoCA 2.5 Access CPE (eBay search)
Critically, it's characterized as "MoCA 2.5 Access" and with a fixed operating frequency of 400-900 MHz (see pg.2 of the user guide), so it would...