Pretty neat little mobile vaporizer, I agree with all the pro-points you listed. One thing I don't like about it is how difficult it can get to clean the inner-inner tube which has the three holes as a filter. When used enough, resin makes it into the triangle shaped inner glass's inside, and it's a pia process to somehow clean that out. I've tried alcohol, heat, but neither does a perfect job.
Also, one has to be careful when using the small integrated cleaning / picking tool's pointy end. This looked to be for cleaning the glass filter holes when they get clugged up, but it's easy to crack the glass when using it. You just have to use it in a bit wider angle when you clean the filter and it cracks the its bottom open.. so while it's all sturdy outside, it's also pretty fragile inside. I bought it during the intro when they gave a free set of inner-tube replacements, well I quickly figured out why that was useful.
If you grind the herb too much, little pieces make it through which can be caugh inducing...but that's pretty minor. These are the only things I've noticed about it, but as far as performance, quality of vape and general usability goes, it's outstanding.