[coloradan]

It sounds more like a leaky flip-flop. (Although those are level-sensed and not current sensed).

[ThePythonicCow]

It sounds more like a leaky flip-flop.

Yes - I think so. Though (1) I'm not sure why you say "leaky" (I haven't noticed any claims that the device "leaks" state over time), and (2) it's substantially smaller in size and power needs than a single transistor, whereas a flip-flop requires five or ten transistors (I'm not sure exactly), and (3) it keeps state while powered entirely off.