Just got my GH, took it for a test drive with 2 other friends, and I must say i'm impressed.
I also own the Inhalater XP, which I was use to the slow and steady drawing. Took me a few tries to realize this method doesn't really work well with the GH. A note about the loading, i've been using the INH capsules. Yes, they are slightly larger than the actual opening, but it all funnels into the chamber minus a few small particles, which is quite easy to wipe off.
The GH is superbly made, easily the best vape (actually, i'd daresay portable device i've owned in terms of build quality).
Out of the vapes I tried (PAX2, INHXP/05, Ascent, Solo), the GH definitely has the best taste IMO. Some people might argue with that statement, but with those vapes I listed you need to do slow draws. I found with the hopper, you can take a huge rip at 4/5 while still getting good taste while producing clouds.
I must admit, I was having second thoughts before my shipping confirmation and actually asked Trevor to cancel it at one point due to all the defects. I couldn't since I backed through IGG, but thankfully he didn't because it's by far the best vape i've tried, and that's ignoring the pricepoint. So for anyone having cold feet, it's definitely worth the wait and any issues that might arise.
My only one minor complaint is the 1-minute timer.