When I need to export to excel directly, I often use the openxlsx
with its write.xlsx function.
I then use shell.exec("myfile.xlsx") to say from R to open in windows the file with excel.
Sometimes, I use also csv format by writing them with readr::write_excel_csv2 and then open manually the file in excel.
I think if you do this kind of workflow a lot, using the addin feature of RStudio to hide your workflow behind a keyboard shortcut makes sense.
I find that snippet feature is also a convenient way to quickly achieve something - no keyboard shorcut but some keyword to write the chunk of code quickly seems to me similar and quicker to create.