I know there are (expensive) framework which let you write android apps in VS C# and compile it to android apk.
I also know, that it is possible to write Java application in VS (link).
Is it possible, maybe even not harder than in Eclipse, writing android apps in Visual Studio using some free plugins/frameworks/tools?
Is it possible to compile androids apps, and debug it in phone/virtual device?
In the near future I think using Android Studio would be best choice.
Simply write them in Java using Eclipse. VS is not optimized for Java and Eclise has a larger ecosystem of useful plug-ins. Using VS for Android development is like designing a web-site with assembler: It is simply not made for that :).
You are asking whether it is worth a try. Well “a try” compared to what? Are you currently developing apps using other IDEs or have you never developed android apps and you only know VS and want to try it there?
If you already use other IDEs keep those. If this is your first android project, using Eclipse is easier, as written above.