Why? / How? It it power to coil...
Durability is the only advantage I see to a mech device.
Yes, it involves the conductivity of each device, the feel and quality of the switch, choice of materials, etc.
I really don't want to get into ALL of the reasons why mechanical devices and genesis atomizers go together so well, not in this thread, anyway. You're more than welcome to start a new thread or PM me if you really want my thoughts on the topic, and I'm sure that other people will answer your questions as well
What I will say, basically, is that I can set up, repair, or otherwise mess with or build genesis coils twice as fast on a mechanical device, and there's nothing limiting, kicking, bucking, or otherwise interfering with my perfect vape, ever. No error codes, no blown circuitboards, no flashing screens of death... and the vape itself is consistently powerful- basically, as powerful as you can stand, although you can wrap a more benign coil for a less-extreme vape.
Mechanical hybrids take more practice building in the beginning than VV/VW genesis combos, but are much less touchy and easier to use for experienced vapers (or at least after your first few dozen builds).