I am currently using SS cable with braided silica sleeve as an insulator. It works perfectly with a little bit of dark back-wash returning in my
tank. It wicks a little better than a regular setup of plain oxidized and
juice-burnt 500 mesh and it's painless to set up. The biggest problem I ran into was actually cutting my SS cable, I did give it a bunch of
juice-burns just in case. The build itself shouldn't generate any shorts or hotspots, if it does check again if your coil wraps are touching like they should in microcoil style.
One problem I ran into was that the taste was off. I found this was because my silica sleeve was sitting flush on the wick hole. All I had to do was pull it up a little. I also gave it a very short dry-burn just in case (I did boil the sleeve beforehand). Besides these 2 hick-ups it just keeps on performing very well. Try to use the least amount of sleeve possible.
Most importantly I think this flavor is the nicest I've tried so far, cotton doesn't seem to cut it for me.