Good idea, just tried it. It works! Put my derringer kanthal .20 on set it to 10 joules and it fired it, although it barely heated the coil. Didn't kick me out of TC mode either. Works from 10-50 joules. However you're limited to 50 joules. So if you want step down for kanthal kiss the 75 watts goodbye.
Does it actually feel like it's firing at an even 1J = 1W ratio though?
IDK, on the surface i'm kinda getting the impression that they really skimped out on this chip to keep the price down. Which isn't exactly doing much to inspire my confidence in the long term quality effort that went into it.
Might not even open mine until i see the first taken completely apart review