I am using it only through glass. In general, I am satisfied with the purchase, it is my 1st log vape. After starting using it with hash, I like it even more. With herbs the roast wasn't even, only sometimes with very fine grind.
I haven't tried yet through the glass injector with flat screen, but I believe the screens of the metal chamber are a weak point. They stuck inside the wooden sleeve, and I recommend providing also rimmed screens (if possible) as they do not lose their form, like the minivap filters or the tinymight 3d cooling stem. They last for very long time.
Also do I insert the default stem, inside a 14mm bong, or am I going to damage it? Now that I have the wooden sleeve of the glass M/P broken and glued, am I going to scratch the default stem where it makes contact with the glass? Because on the website there is a photo of the default stem inserted on (what appears to be) a 18mm bubbler, because mine doesn't go so deep and I only have 14mm bubbler ATM.
Finally, does the wood quality affects the vapor or all CLs provide the same vapor?