Groover and french edger advice for shoe making

[tomsmith85717]

I recently learned a style of attaching uppers to the sole. It involves making two parallel lines with a stitching groover and then running a french edger in between the  the groover cuts. this allows a place for the rolled over upper to sit flush in the bottom of the shoe. So I am looking for professional tools to do professional work.

Here is my question, I am looking for good professional versions of the tools. I like to use them with a reverse grip and pulling towards my body, so they should be usable ambidextrously. 

I am torn with several ideas

getting 2 cheap handles and fitting good replacement blades from high end groovers into them that way I never have to adjust them as you are always setting on at 1/4" and the other is at the width of the french skiver.

getting a Ron's tools groover (how deep can it groove into the leather? i need about an 1/8 of an inch depth)

getting something like a barry king groover...

 

who is making really good french skivers in the 1/4" width these days. 

I have large but not abnormal sized hands.