Why a train manufacturer would make an engine you CAN'T control using a transformer is beyond me. Forget about LionChief.
Why? Because it is not 1958 anymore. The new entries into the market, and with any luck, into the hobby want to control their train as they control their drone. RC car, and everything else. The LionChief answered that call. I remember reading the goings on here:
Rivetcounter: I don't want a hand held control. (week one)
Rivetcounter: Hey, can I take the control board out of a Lionchief and put it in my 1666 engine and run it with the remote? (week 2)
etc.
Lionel followed up with improvements (Universal Remote, BlueTooth) and didn't stand still with the improvements.
Having an engine that runs on AC or DC, and runs 2 or more on a track without a block system is brilliant.
You don't get up and cross the room anymore to change the channel on the TV do you.
Suum cuique