Here is a quick video off using the extrude-tapered command to generate an offset for the font to be Vcarved..
In this video though, I "eyeballed" the distance. I have to think about how to get a snap point to generate an "Exact distance" to get an "Exact depth" from the bit.
Also to note with this method, I picked a place on the font to use as my "get depth from here" value... Any other areas where the walls are wider, or narrower, would do the VCarve Variation. But the variable depth is what makes "Vcarve" look so cool...
I guess you just have to determine if any of this works for what you want...