OK, that is what is commonly called a "diverter" valve. Basically it has ONE input and TWO outputs. They are used to "divert" fluid from say the dump/curl cylinders to a grapple on your loader. The 9-5117A is a better one to get because it does not require constant power. Also, the 9-7852 is smaller and $10 cheaper.
Either of these valves won't care if your system is OC or CC, since they are used after the spool valve.
I was looking into using it for my rear remote, I only have one and need two and this looks to be a cheaper option, I looked into the fasse valves and this appears to be the same valve body less the hook-ups, This is a link to what I am talking about: Fasse Hydraulic Valve Multipliers
I do like the valve you gave me the link to for my front end loader because I do plan on adding a grapple in the near future.
The Fasse is a good peice, it should include everything you need-but at a higher cost. They only sell through dealers, so you will have to check with yours for pricing.