Ok I realize this is ridiculous... But I couldn't help myself.
I wanted to see how fast I could wing a character in about 30minutes. This is as far I got with the insert brushes and some typical sculpting.
I created a new insert mesh that is just a cylinder that welds shut and using the curve size setting I have it mimic the outline of an arm the result is a tube that resembles an arm's basic shape at pretty much any length ready to be sculpted.