Andre, what you stated here is true. You do NOT need SNAPSHOT ISOLATION on but if you do not, you will need to do some extra work to make sure that all requirements are met. You can read here to get more details regarding how it should be done without snapshot isolation.

EDIT : Regarding CHANGE_TRACKING_CONTEXT, it will work fine if all data changes are done only using applications. Then you have control of it and you get more context of the data change. It is a good info to pass to everyone. Thanks. I missed that in the article.