My experience with different atties is actually a bit limited; so far I think the only ones I've seen with the "thru the post" type fasteners are drippers, but some drippers have a deep enough well that you don't have to drip constantly; my Achilles holds 2.5ml, but it's like a Kayfun, around the post-screws; Magmas hold about 1-1.5ml, and I think those are *thru* the posts rather than around the post-screws -- that one is actually very easy to build, and provides a really outstanding vape, though admittedly, it's a pain for taking anywhere, because it has a tendency to a slight leak, and you have to keep it fully vertical or it will spill everywhere. There's a way of modifying it that will (I think!) eliminate the slight slow leak, but I dunno if it would help much with the need to keep it vertical. For rebuildable-atty tanks, all I've seen so far are the around-the-post-screws type fasteners; there may be others that I'm not aware of, that have the thru-the-posts design.
Andria
, then I find out you stuck 'em on the plunger handle 
