Might have known one of our music "experts" would have a pop at me over this one..! 
The main difference, TBH, is that this keeps your config self-contained, too. Reaper may be portable by default, but it still writes all its config stuff into the save (at /root/.config) every time you run it....
So this keeps it 'local', just sym-linking it out to the expected location when it runs. Thought it might help a few folks, perhaps; really, it's just more practice for my packaging skills..!
I guess this is more for those just starting out with music-production, who want to try things out. You long-term 'composers' will already have everything set-up just the way you want it.
Mike. 