Thanks Henri.
That headstock and volute has evolved a bit over the years. In my earliest builds I was always concerned that headstocks were fragile constructions with the stress of angles, string tension and trussrod channels and counter tension. My early headstocks included the stout volute and a center spline to give the headstock added strength (in my mind anyway).
That got refined to eventually lose the spline since I saw no evidence of breakage, and was often fighting with enough room for the tuning machines as I tried to get them closer to straight pulls. That lead to them more current shaped volute, which I freely admit took some design features from @killemall8's volutes, namely the transition from the neck to the headstock. Then I was building a guitar for my son and getting some pressure to sign the builds. I recalled a comment from @sdshirtman stating the volute would be a good place for a logo. This didn't happen all at once....there was no lightbulb going on over my head. In fact I thought it was all my own idea, but over the years I recognized the influences. Anyway I signed my son's guitar like this:
And have done so since.
SR