I am not sure if I would use "steep" but more "different." I came from SONAR 7, but had not used it in a while and am thankful for that because I didn't immediately react with "why is it this way now?"
Some workflows are so similar that they are nearly identical. People tend to notice the differences a lot more, and there were (and still are) loads of "why can't this be like [enter previous version here]?" threads. Leaving both loaded will allow you to switch between them fairly readily. Most folks have a specific work flow they default to, so the best way to learn is to simply target those areas first (significantly quicker).
If you consider the perspective of a new user (to any DAW), simple routing of MIDI->VSTi can be an incredible hurdle. In that regard, you are light years ahead already, since the core of the platforms is mostly the same (just different nuances).