Maybe there's a way to install both but turn one off and the
other on?
Yes. There is. In fact, this happens automatically when you install and
run a JACK App.
I just think this is suboptimal, since, as far as I know, there is a
way to make both work at the same time. So, at least for me, having
this by default would be a really nice thing to Fedora Workstation.
(sorry for bad English)