-------------------Update-------------------------
It's been pointed out to me (in the nicest way) that I've been talking out of my rear end and that the regular single coil evod head isn't compatible with this device. The aerotank head has a silicone cap that is necessarily taller than the evod cap to make a seal with the central air tube. As the evod cap cannot make this seal, using it will allow juice to leak into the airtube.
Humblest apologies to anyone who has made a purchase decision based on my erroneous review. Now I know why Todd keeps saying "This is just my opinion"!