I love the form factor of this mod. Nice size and comfortable fit in the hand with a rubberized feel to the finish. Nice LED display, a just ok fire button that doesn't fire 100% of the time and is audibly clicky. Three button control. Atty resistance and battery voltage meters. Hits about 0.5-1.0 volt higher than the voltage that you set (compared to my Provari). The 18650 battery lasts all day.
I've ended up with two of these. The first had a wobbly top connector pin from the get go. After 7 weeks the three front buttons fell into the body. It still had a week to go on the 60 day warranty, so it was exchanged for a new one. This one seems to have a solid top connector pin. On both Grippers, the battery door appears flimmsy, like it could easily break if you aren't extremely careful using it.
I use cartotanks on mine exclusively. I can't say, based on my experience with the first one, that I can recommend one without reservations.
I ended up getting a much better constructed Segelei/Ovale V8 while waiting for the second Gripper to return. I can recommend it without any reservations. It uses two 18350 IMR button top batteries that also will last all day, the batteries are a really tight fit to insert, but that is the only issue that I have with it. $30 from Discount Vapors. DV also has a $9 leather pouch/lanyard which I also bought.
View attachment 180419 Ovale V8