Still really enjoying mine. Add an extra screen to the bottom to prevent gunking-up of the permanently installed one, crank the temp, load some legal solid concentrates, and it's fantastic for that purpose.
Biggest drawback is that it can and WILL activate in your pocket given a long enough timeline, so if you have to carry it in non-friendly situations, I suggest carrying it empty and clean. Also the newer mouthpiece design, with o-ring and screen, is inferior IMO to the older design, using holes drilled in a steel plate which screwed into the plastic mouthpiece.