It appears what you mix up/create a theoretical issue, which do not exist if you would follow the advice of chewitt and also doesn't exist in practice (especially if the advices in the README at GitHub are not skipped, or those from above).
Because 1.1.7 and 1.1.7.0 use the same add-on id "service.argononecontrol", you will never have installed both version simultaneous. The last installed package version wins and overwrites the other. On that way you could switch between both, if would a different in code. Use case: a newer version is available at GitHub and you can't wait until it's released via the LibreELEC repo.
By the way: If something in the README is unclear documentated, please direct to the paragraph and ask straight forward. Maybe my wording is wrong (I'm not a native English speaker) and can misinterpreted or an information is missing. Sometimes it seems as if only headings are read or entire paragraphs in which the answer has already been given are skipped. The latter is frustrating because I can't fix the behaviour of the readers and it makes additional effort.