The mega eGo attys are 2.1 ohms and act much like the regular 510 atomizers and despite their size, you can still flood them with 4 drops (unlike the LR attys which can take a considerable number of drops).
If you drip and you've ordered some, they DO come with an empty cart for shipping - iow, it's a regular cart that you could put polyfil or some cart
mod and use it as a regular cart - not the blank shipping cart you sometimes get with 510 attys. You
could make it into a 'drip tip' with some modding/cuttung or with a drill down the center. Like the cartoz there are two 'caps' - an 'up cap' which is the mouth piece with a hole in the middle, and a 'middle cap' which unlike the cartoz has a hole also in the middle (cartoz have 2 offsetting holes off center) and then you see the bottom of the cartridge. There is no 'sealed hole' like there is with the cartomizer. You'd have to drill one. If you go that way, just remove the mid cap. And you'll likely want to enlarge the mouth piece hole as well. If you just removed both caps and dripped, you'd be going down the side air channels - likely not a good idea ;-)
Best match for dripping with the eGo, imo, is still the 1.5 LR attys with a regular drip tip. Better vapor, good flavor and rather easy dripping.