As designers get more comfortable with curves, we need to have better ways to measure them.
Currently, in Revu, you have to place either a Perimeter or Polylength tool and then "Convert to Arc", which is a bit inefficient tbh.
What's odd is that if you use something like the 3 Point Radius Tool, and then turn on a caption, you can get the Arc length, but that Arc length does not appear in the Markups List.
An easy way to put this in the Markups list might be to simply add an optional column like you already do with the Rise/ Drop and Slope Columns. This way, we can keep turn on or off depending on the workflow.
Bluebeam has always been a bit lacking when it comes to the Finishing Trades, including some specific columns would be a good place to start.