I happily use both ssh and scp.
Quite often I am in an ssh session and I'd like to retrieve a file from my machine and put it in the directory I'm currently in without having to open a new terminal window and work out the scp command. So effectively i'd like to be able to do this:
remotemachine#scp homeconnection:thisfile.txt .
without opening an scp server on my machine. Is it possible to use the open ssh connection to do the copy or am I stuck going in and out of ssh?