IMO everything you can do with Android Studio (gradle, maven, etc) you can do it with Eclipse faster and easier and i mean "faster, easier" because in Eclipse if any problems arises like "error XX" you do a quick search on yahoo/google/whatever and thousands of results appears of guys who had the same problem and how to fix it.
I've been programming with Eclipse for C/C++ and Java over 8 years already switching to IntelliJ for me is a total waste of time with translates in a huge loss of money, all my clients wants their apps for yesterday and i can't have the luxury of "playing" and wasting time tweaking a really different IDE while i have bills to pay. So in my case i will 100% stay with Eclipse.
