@Wishmasterflo you ROCK! Your dualboot TWRP is awesome! Thank you for this. I'm running a 6T with OOS and Kang currently and loving it! I've had the 6T since it came out and have been running OOS since. I have wanted to try some custom ROMs but OOS has been pretty solid. Now with your dualboot You have given me the opportunity to keep OOS and try other custom ROMs if I want. It's amazing!
The only thing I may suggest, is that in your instructions... you should clearly say, that you need to change the TWRP file name to
"-fast-su.AB.zip" or whatever the set up configuration may be that best suits the user and device. Whether it's with, encryption on slot A and or B or a and or B or A and b or vise versa. Would it be possible to make a separate flashable zip of all the configurations that you have available. I'm sure that it would be a pain in the a$$ and It's just a thought. That whole part was a little confusing when I was setting dualboot TWRP up. Believe me... I know you have a lot going on and you are busy but that may make thing a little easier for some that are not so inclined and it keeps TWRP from formatting partitions after the initial install.
Thank you so much for your Feedback. Great that you loving it. I am running KangOS as well and Carbon ROM A10.
OK I will think about how to make the file name configuration perhaps a bnit easier.