Theres a lot of information because kickstarter backers are already using the H2 and the H2P. I have a H2P that works without any issues.
You can use the H2 with a cable if you want as long as you have a 65w charger.
The H2 is not slower than the H1, it has a longer stroke range so it needs to travel longer for a full stroke... H1 and H2 have the same speed. If you get a H2P you can overclock it in settings and make it go much faster... max speed is 4 times faster than H1. The motor in the H2 is much more powerful than H1... It makes movements a lot smoother and you will feel more details in scripts.
I have had a Handy1 for 4 years and it has never overheated once, so far I have had 0 issues with overheating on my H2Pro.
The issue with reconnecting scripts is an issue with SLR/deovr app, not the handy... If you use any other website or video player you wont have this issue... Not sure why it havent been fixed yet but hopefully it will be fixed one day...