You could but it might be a bit messy and less sleek. Check out the video made by Leo below at around 4:20 you'll see what I meant by that:
Oh, okay I got you. That could be problematic, but I would think a straight drip tip could work as a kind of adapter for refilling, temporarily taking the place of the extra bit of Killer sticking out the top of the tank... I will have to give all this much more consideration when I do get the Killer. I'm not saying for sure I will even cut it, hell, the bit sticking out may not bother me as much as I am anticipating. Just bouncing ideas around here...
My main concern is the vape being uncomfortably hot by chopping off the excess, but as far as I can see that proceedure wouldn't put you mouth any closer to the coil then say a short barrel HH .357. I could be wrong there. Additionally, the drip tip I plan on using is the 9mm bullet tip I found here: Aluminum drip tips. The casing of the bullet is stainless (if I am not mistaken) but the bullet itself (the mouthpiece part) is delrin, so I wouldn't expect a lot of heat transfer to the lips... Just kinda thinking out loud. If anyone can see flaws in my logic please do point them out, I don't want to chop down anything and regret it later.