My only real suggestion might be to see if there is a different option than that model? Maybe just a base MP2150?
Other than that, I'd have to defer to our member-base and if someone might be familiar with that remote and the new Portals.
Just have to setup the remote manually, the remote commands are all on the drop-down list for setting up the buttons on the remote.
I wouldn't worry about learning.
Here is a PDF that jetranger made
I believe started with Shaw Cable as the manufacturer and MP2000 for the model.
I can post the complete steps I used for mine if needed.
As kevinds has said, choosing MP2000 as the model number should work for you. This model has been around longer giving Harmony time to work out any bugs in how they map the controls. The difference between the models is a hardware change, as they carry the same guide you should not see any negative effects.
The MP2000 and MP2150 use the exact same remote, if that makes it even more clear