I actually had the opposite experience. Yes, Scala takes some time to digest but I didn't find it particularly hard. I come from a C# background and Scala just makes things so much easier to code once you get the hang of it. On the other hand, I tried learning Go before picking up Scala. Something about it's handling of concurrency just didn't sit well with me. Perhaps it was because it was so different for C#. I never really got a good hold of it.

For me Scala has a little bit more upfront cost to learning (but if you come form Java and C#, it should almost be second nature) but the things you can do with it once you get a hold of it is amazing. Go (for me) on the other hand is very easy to write simple Hello World programs, but if you want to do complex applications, it has much more down payment.