Okay this is confusing it says it's for "Suitable for CE4/CE5/CE7/VI,etc atomizer" meaning it should work with the EVOD if I'm not wrong, could you explain this to me please?
Agree with Brock and the others. You are correct in your thinking, and the EVOD will work without the adapter in most circumstances. But having the adapter can serve as a fail safe.
For example, I purchased five of those same EVOD's from Fasttech and three fit just fine on my Zmax (Ego threaded just like the Vamo). Two wouldn't thread on at all. All five DID thread onto the adapter, though. For two dollars it's definitely a nice thing to have.
Sidenote: You may want to consider going for the slightly more expensive Vamo kit ($50) that includes the NiteCore charger and Panasonic batteries. Both the charger and batteries rate among some of the better out there.
It should be fine. If it draws to tight when you inhale then I'd get the adapter.
If you get the newer model Vamo V3 it works with all 510 and eGo connections without the need for an adapter.
$53.63 Vamo V3 Variable Voltage E-Cigarette Battery Compartment Set with OLED Screen - with Nitecore I2 US battery charger/charger cable/2*Panasonic 18650 batteries at FastTech - Worldwide Free Shipping
The Panasonic batteries in this kit are highly regarded on this forum and the charger is better than the one in your link in addition to the upgraded V3.
Sidenote: You may want to consider going for the slightly more expensive Vamo kit ($50) that includes the NiteCore charger and Panasonic batteries. Both the charger and batteries rate among some of the better out there.