Up Tech Essential Oil Cartridges

Are the Up Tech Essential Oil Cartridges any good? Was looking to use one instead of a kiss cart so I wouldn't have to mess with loading oil on the go. Will these work fine with the o-phos, omicron mini, etc style vape pens that come with kiss carts, keeping the same look with the mouthpieces that come with them without having to make modifications? Thanks.

http://www.w9tech.com/essential-oil-cartridge/

Those are the cartridges d9 used to use regularly. They do work great but until you get used to it, they can be a pain to fill and get hitting right without getting air bubbles in there.

Thanks!