ive seen some pictures of super daddys, the homozygous form, it was linked from this forum somewhere, but google refuses to be helpful.

it had a slight overall reduction in color, a bit like a hypo.

of all the genes in the BEL gene complex, the daddy gene is by far the weakest. but that makes it useful to tweak and improve lesser/butter, possibly also mojave or bamboo. combined with a strong BEL complex gene it lightens up the colors, without resulting in a white patternless BEL.

so yes, a butter/lesser daddy pinstripe would be quite interesting, i think it would look really pretty.