OK, i've never seen one of these Superkings so I went and looked online at one. Here is a link if anybody else wants to check it out.
<a href="http://www.**************.com/product/prod_Display.cfm?siteid=6&pCatId=3640to" target="_blank">http://www.**************.com/product/prod_Display.cfm?siteid=6&pCatId=3640to</a>
I see no problems with that type of filter, it basically is an overflow box and a sump combined into one. The reason you may not see people using this type of filter is because it has a lot of visible equipment where people like me like to hide our sumps under our tank and throw everything in there so its hidden. I don't think you have anything to worry about.