I recently purchased some ProRings which fit between the Provari and the 22mm tanks, much like the cones people use on their eGo batteries to hide the connector between the battery and delivery device. I don't have a pic using the ProRings with an IBTanked yet, but I do using it with an AGA RBA tank which has a 21mm diameter. Clean lines all up and down the entire device.
I purchased my ProRings from Rampage Vapor (Korean vendor) for $11 each. Adapter :: Provari Conn -
Bomb Vapor is US based and has them for $20. Pro-Ring Stainless Steel. Other vendors have these, also.
I noticed in the description for these prorings on Bomb Vapor.com, and it says they are for juice delivery devices with top cap air flow, such as RBA's. I was interested in picking one of these up for use with a carto tank, but now I'm concerned that it will impede the airflow as it will sit flush with the bottom of the carto tank. Is this a legitimate concern?