I don't have that exact one, I have one that's a lot like it, but it has the holes so it can be used as a drip tip. When I get a little extra money, I'm going to get the one from Ibtanked.
I use the refilling drip tip IBTanked sells and I also fill with a needle tipped bottle (14 gauge needle because I run high VG). Refilling my carto tanks is pretty much a no mess deal that way.