I know it's late but I got the Zeta built. I just built it the way it came to me even with those weird coils. I'll definitely put my own coils in it as soon as I need to. The included coils are reverse wrapped and have what looks like welded-on non-resistant legs. The coil itself is a dark matte gray, almost like a coil that's already been torched (sort of). They really should give info on it, but no. It's 10 wraps, 3mm ID and fired up perfectly the first time. The legs are 9mm long. If you push it all the way down it touches the top of the air hole (too close). On my ohms meter it's .94 ohms. On the Pico 21700 it's .88 ohms. (You decide).
You can try it but I would ditch the ceramic deck insert. It only poses a nuisance when building because it moves around and not sure, yet, if it makes a difference in the flavor. The ceramic dome, however, might be more useful because it reduces the chamber, for one.
Just got it done and still breaking in the wick but, yes, it's a lip licker! I find the AF interesting in that you can, contrary to one reviewer, set it in between the stops. It's comparable to my KFs on the smallest AF settings and it still holds flavor on the larger ones but you'd probably want a bigger or more complex coil for that. Although, the juice channels won't accommodate a large coil. Maybe a simple 3mm Clapton. I think with a little practice building it won't prove to be annoying at all. Should you buy this instead of another KF clone? If you want a small, sharp looking true MTL with top fill, yes......First build, no problems with wicking, leaking. As with all attys, only time will tell if this stays in my daily rotation. So far, so good.
ETA: My own coil will be a smaller ID so I don't have to fiddle with the wick fitting in the juice channels.