This statement makes no sense, unless you meant to say "It's not a true VW..." I agree that it doesn't automatically check in real time the way some "true VW" devices do but it does check. I've have seen it happen when using rebuildables and having the ohms drop due to a loose coil and I never once noticed due to the device changing the voltage on its own to compensate.
Yes, often happens with the Terminator C... But when set into an eVic it limits (or opens) the available wattage for the resistance. With the Vamo you could well blow yourself up, there's no limitation...