Just tried my hand at hand-wrapping some clapton coils in the bathroom. I call it the Crapton coil.
First tip, is you can stop the extra wraps short of the posts and just thread your core wire into the posts. It will glow up and vape the exact same way, tested it. So you don't need a fancy RDA to use these, in this picture I'm using a 4 dollar nimbus clone with tiny post holes.
I personally noticed that these vape the best when the core and outer wire are the same diameter. The pictured coil is 28ga on 28ga (which is a PAIN to wrap, do not recommend doing it by hand) but I built another 30ga on 28ga one and the glow-up time was insanely long, even using less wraps so the resistance was equal.
It does vape like a lower resistance coil than it is, but the warm-up time is a lot longer than a normal coil. When I fire it, barely any vapor comes off for around 1 full second. Then it will make a loud popping sound, shoot hot vapor everywhere, burn me a little, and start ....ting forth massive billowy clouds. The warm up time on the 30/28ga one was more like 3 full seconds.
Over all its a decent coil, but the warm up time makes it a gimmick at best. The flavor is great, the vapor production is decent, but that warm up time... Wold be an awesome vape for high watt regulated mods, but it still gets beat by a regular old coil on mech mods. Just my 2cents.