As an aside, this speaks to how useful/awesome it will be if/when @weefuzzy remakes @leafcutterjohn’s slicer visualizer thingy. (and same goes for other types of things (e.g. fluid.ampslice~ envelope visualizers))
On a more topical answer. This is indeed super awesome in Reaper. I still haven’t done anything major in Reaper, mainly relying on Logic (and Audacity(!)) for vanilla “tape recording” as needed.