Regarding especially Eclipse, project and build management in an IDE can be good. Typical Java projects that use Maven and are built "officially" with scripts and CI systems without an IDE can be worked on by Eclipse quite cleanly by

  - Checking sources out of version control
  - "Importing" them in the Eclipse workspace as projects from existing code in an arbitrary location
  - Configuring what Maven installation, and with what configuration files, is to be used to build your projects
  - Defining a grimoire of Maven command lines (build and test locally, build and deploy somewhere else, package for release, etc.) as run/debug configurations

The impact is limited to harmless project metadata files (containing nothing important that isn't mirrored from Maven POM files) and repeating in the closed world of Eclipse options configurations, paths etc. that are probably already in scripts, CI pipeline definitions and so on.