The OP is learning to cut dovetails. He bought an expensive fret saw to "speed up the process" and was not impressed with the result over his regular coping saw.
I think discussing the relative merits of coping vs fret saws and premium vs regular brands is right on topic.
My $0.02 is that a fret saw might help in some cases because it the small thin blade can turn 90 degrees in the kerf from a dovetail saw. So perhaps a little less cleanup on the start side of the cut? I come in at a slight angle with my coping saw. I takes one pass at the end to reduce the sloped start. Since I'm not doing any fretwork, there's not much incentive for me to buy a fret saw. Plus, the blades are more delicate and break more often (or so I'm told).
As for the premium KC fret and coping saw frames, I do not believe there is any advantage using the KC saw for cleaning up dovetail waste. None.
There is nothing wrong with buying a premium tool just because you like the design or materials or whatever but a titanium alloy shovel may not dig a hole any faster.
-- Dan Rode
"We are what we repeatedly do. Excellence, then, is not an act, but a habit." - Aristotle