Oh, was close to buy... but looking on the review:
1. I am usually using the mod's usb port for charging, here it is hidden under the case;
2. 510 repositioning and access to the USB requires dismantling. 2 screws are not a problem, but tightening them back in delrin (no metal sockets there)... well, there is no question if but when the threads will be worn
3. Last but not least: 31.5 is on the edge of my tolerance, as otherwise the drip tip will be on the same level as the battery column
Ah well...