Yes, I have had a look at it. Some of the information and design features are brilliant, however not having tried the cutting function I would be remiss in passing judgement.
I would think it would be great for small RC gear cutting and GoKart gear boxes and such, and certainly for low production 1 off assemblies that don't require low noise gears.
And as you can see, I am only looking at it from my background in engineering.
As to Mach3/4 being DIY, I believe those days are gone, as I am seeing more and more Taiwanese, Chinese, American, and Australian products brought of the shelf incorporating Mach3 as the Control software. Even a lot of the questions on these forums relate back to store bought Mach3 configurations. It is a problem with Good after market software, eventually it gets used in commercial stuff, and the robust nature of its design come to the fore. From that stems the inevitable intellectual/legal lock down of the software.
Also TP, I put up a macro used while trialling the Number features of Mach Cypress Basic. It becomes quite interesting when you put in large decimal place numbers.
I.E. what rounds up and down and where the cutoff point is.
Wes