Anyone familiar with Halo XL cartomizers?

[rvmeush]

I recently came across the XL cartomizer listed on the Halo website. They are supposed to hold 1.5 ml of eliquid vs the 1 ml of the standard cartomizer. I didn't find any pre-filled versions of this cartomizer however. I also couldn't find anything similar on the Smokeless Image website. I was wondering if anyone knew of other versions of this cartomizer that might be pre-filled, and possibly any reviews of the product? Thanks.