So you are the one who ordered that "classic/new grind" with a Spanish point! :) I was at Mastro Livi workshop the day he was grinding and making your razor. :) Now I wish you will post pictures of it very soon so everyone of us here will see it. Not to mention, you will contribute to this thread with your razor.
I agree with you: the Mastro Livi "new grind" is truly a wonderful and lovely shaver, besides being a wonderful piece of art and craftsmanship.
As for your question, I guess this is very subjective to answer. I have six Mastro Livi razors and all of them are very different one from each other in many regards. Don't misunderstand me, they are all magnificent shavers, but each one of them has a truly personal "character", feedback and feeling. They all however are excellent shavers, no doubt about this.
So, do the so called "Mastro Livi customs" shave different than the "new grind" razor? Yes, definitely. Are they sweeter than a new grind? It depends. In my opinion, Mastro Livi carbon steel razors can also be sweeter than his new grinds, whereas the stainless steels he uses, RWL34 in particular, are more aggressive and absolutely very efficient.
Not to mention Mastro Livi carbon damascus steel, which is, in my opinion, sweeter than all of the carbon steel razors he makes.
As for stainless steel, Mastro Livi recently started using a new steel (of which I have no idea of what it is) and he called it "experimental inox" because it was part of a number of new steels he was experimenting and testing on. I am proud to say I have been the first one in the world - besides Mastro Livi, of course - to test this new "experimental inox razor" and I can certainly say this steel is impressive. Aggressive and efficient like RWL34 but certainly sweeter than it.
In my opinion, we are talking about "splitting hairs" as I believe all the Mastro Livi razors are superior shavers in many regards: to me they are the very best I have ever used for shaving and it is very hard to me to tell the best of the six I have. But they do certainly have a different personality and each one of them has its own way of shaving, all of them being effective and impeccable, however different.
For the moment, enjoy your new magnificent Mastro Livi "new grind" and I hope you will post some pictures of it soon: I will certainly be glad to see your razor again! :)