Mark,
No need to swap for the Tams pump. The JetCat works just fine as a stand alone pump operated on a spare rx channel. You can even operate it at variable speeds with a slider switch if you want. That's the way I have mine set up and it works just fine and in fact, very similar to a Tam's pump. Take a look at the manual here and it explains everything.
http://www.jetcatusa.com/PDFFiles/Sm...tionManual.pdf
Craig