Thank you for contacting Octopus Support and great question on installing Octopus via a Helm chart, you found the GitHub page on this which is great so you have all of those details.
We do actually have a bit more information on one of our recent youtube videos here if you wanted to give that a quick watch, the link will take you straight to the Helm part and its about 2 and a half minutes long, it does not provide much more information but we do go through it a bit more on the video so that might help you.
As for any ‘gotchas’ since this was produced in March of this year we have not had many customers put in tickets about the Helm chart so either not many customers are using it yet or, they are and they have not found any issues with it so far.
Whilst I know that is not the best answer I can give you we ideally need a bit more ‘baking in time’ for customers to start really playing around with installing Octopus via the Helm chart and raise any issues they have had with it before we can start to collate any major data on it, obviously if we do find issues we will fix them but so far there have been none reported.
I hope that was the answer you were looking for, reach out if you have any other questions as I will be happy to try and answer them for you,