| This set not only does not work, but it has flaps on a slider which I | was warned that a misplaced finger could send the plane into a crash. | My instructor lost his plane by putting a control surface on slider...
To be fair, putting a control surface on a button or knob is not inherently safer than putting them on a slider. I don't care how your transmitter is set up, a misplaced finger can always send the plane into a crash.
You may feel that flaps on a switch is safer than a slider -- and I may feel that a slider gives me added flexibility that's worth the added complexity. There's rarely any clearly right or wrong answers.
(Now if I can just find a good way to put crow mode onto a slider, so I have porportional crow mode like the gliders do ... that would be slick. Haven't quite figured that one out yet, not on a powered plane. Of course, I haven't really tried that hard either.)