Yep, that was actually what I tried to do at the start(as per your recommendation when I first asked you about it all those years back). It's similar to the techniques used by classical and bossa nova guitarists when playing at the higher registers. Maybe it will take much more time to get used to it, because my personal preference would be to play at the higher registers using my thumb for pressure. But as of this moment in my ownership, when grabbing the entire heel, bending and vibrato feel weird while fretting doesn't feel as natural and nimble, because even with the subtle slopes and gradient grabbing the whole heel just feels way too thick/big. I'm sure he has his reasons(be it for tone or strength), but at least to me, the design of the heel kinda goes against the whole intent of an ergo guitar(efficient, effortless), which in my opinion should allow for any fretting style/thumb positioning the player chooses to deploy. His neck-through design addresses all of these problems, and I wished I went for it instead of bolt on. It was this that taught me what to look out for, based on my personal preferences, for future guitar purchases when it comes to heel design. I too, never understood the need for 6 bolts or the spacing between the front 2 bolts and the rear 2 bolts when it comes to the 4 bolt 6 strings.