Just received an email from the owner, site will be back up next week. By the way, Crazy Vapes does sell tanks without a fill hole. The glass seems to be very thick too.
All my tanks, 7 of them are Ibtanked. I have never tried a carto tank with a fill hole.
However, me personally:
1- I never place my mod in my pocket.
2- Even though I have the Slap Yo Mama tool, and it works great, the fill hole seems easier and no need to carry a tool.
3- I think the large screw on the side looks really cool
Here is a youtube video I found for anyone interested.
(GIVEAWAY) Crazy Vapes Carto Tank - YouTube
Sorry Trifle03104, I forgot to answer your question. No I have not purchased any of the tanks from CrazyVapes. At one pointed I wanted to try one tank out, or at the very least just have one tank with the screw because I thought it looked nice. However, having 7 Ibtanked tanks I am all set. Maybe in the future I will buy one.
Like Baditude stated though, Ibtanked is a better deal and you don't have to worry about losing the screw. If you end up getting one then buy a few extra screws just in case.