I'd love to know more on this. I'd love to know the use case as React and Angular do pretty much the same thing - so I'm wondering if the question should be more along the lines of "Do you really need to do this?".
angular 1 renders the complete page on change (digest/apply cycle) so based on the amount of elements you can hit a performance bottleneck :) that's why some choose to switch the rendering part since only changes are applied in react -> in theory since you need to control the state and communication flow.
Oh ok - My bad. There are supposed to be big changes in angular two though yes? Based on those performance issues - I'd probably suggest a lighter weight app if the MVC model were to be split as above. Perhaps something like vue.js?