You can do that in both cases, using NumTotalCycles = 2. In the first cycle set SKIP1+SKIP2, in the second cycle set SKIP3. Then you can calculate the ratio of the results or whatever you want to do with them. In the case of WFO, do a normal WFO run in the first cycle, and do a WFO run with StartDate set back by the length of the test period in the second cycle.

You have to write some lines of code for this, there is no flag or something that does that automatically. I also do not really see what information comparing in-sample and out-of-sample results would reveal about the system. But if you have some question about coding it, just ask here.