Zyxel, SBG3500-N

Stumbled across then when looking at 4G capable routers on broadbandbuyer, what's interesting about it is that has 2 VDSL modems onboard.

That said I'd probably still want to use my EdgeRouter so that would be a rather expensive DSL modem (It supposedly can bridge).

Is there anything similar on the market? (2 VDSL modems in one box)