The downsides outweighed the good for me and I've tried it from .4-1.1 with 24-30Ga vertical and horizontal dripper and Russian.
For dripper
Upsides:Good nic buzz,good VP
downsides:taste is more muted, cotton pops off coil and creates inconsistency, the amount of cotton used tends to hold more juice than it will atomize, wicking more finicky than micro coil, some of the worst dry hits and when you look at the cotton it usually still looks reasonably wet, and air flow harder to align right.
I'll admit they were fun to play with but every one got torn down before the day was done with one exception. That exception being the armored dragon build I came up with to use in the russian. It's basically a dragon coil with an equal ID to the air hole on the russian deck wrapped in a long short piece of mesh with equal height to the coil. You mount it vertically and wrap it with 2 C pieces of hemp going in opposing directions to the juice intakes. I really liked the build, but tore it down when I ran out of PG and had 80%VG juice which didn't wick right in the build. Now I rock a broken off piece of a bon 60 grit aluminum oxide wick(porous ceramic) from a genny wick attempt with 26Ga and hemp feeds. I'm gonna run this until the kanthal rusts. I find myself vaping on it more than my drippers now, the taste and warmth are amazing. That + I don't have to force feed it often.