Got my @DDave mod! Was fun testing it out. I'm aware the audio is pretty bad, but it's there for those who want to hear. Online recorders don't do well unfortunately.
The 14mm reducer is a LOT of fun, being able to pack such tiny amounts. Mine isn't a perfect fit, it sits high on the reducer, allowing a little bit of airflow to come in. During use, I could not notice though.
The 18mm is the tits. The smaller mouthpiece lets me side-of-the-mouth chillnvape. It seems more casual and is easier on my throat. Flavor seems to be either on par or better than the stock stems, but it's hard to tell. All I know is, it was extremely enjoyable, and it will most likely be replacing my stock stems. Airflow isn't reduced much, still feels totally open, although, my recent grasshopper use has skewed my sensitivity towards airflow because it's significantly more restricted than Milaana, so maybe there is a bigger difference in airflow than I am noticing. More practice to come, of course.
The cooling wand is VERY smooth. There is no feedback at all using this unless you use a light, so tread with caution. I, personally would probably prefer to get an 18mm-14mm m2m and use it directly like that instead of with silicon and stems. @DDave If one were to add water...is it spill proof? I think that would be my dream at home setup... I figured it was a dry wand, but if water can be safely added, it would be fun to experiment more