berrybrew will allow you to install and switch between different versions of Strawberry without affecting your existing installations.
My unreleased, currently being worked on v1.31 branch allows you to do installs, switch and remove from the UI. You can download the installer for that version right here.
Once it's installed, the UI icon will stay down in the task bar icon area. Just click it and it'll show you the various options.
Let me know if you have any questions or problems. It's been a few months since I've worked on it.