Since humanzees would necessarily be super religious owing to their self awareness combined with their stunted intellectualism, I would respect their rights to gather and worship.
Being a Scotsman, you'd think he would be more concerned about breeding humans with sheep.
I don't think full-on interbreeding would provide much opportunity for useful research. Currently we're tweaking individual genes in several animals, even fruit flies, for useful research on specific disease inducement and/or specific treatments.
Playing with a one-shot half and half breed would be highly unethical, when we have no clue about what the results may be. I'd precict the results could be horrid, even if the fetus could reach full term.
With a 99% DNA match between the two you would think the probability of successful mating to be more attainable.
We share maybe 50% of our genes with bananas. That 1% difference with chimps accounts for huge differences. Imagine thewide range of differences among dog breeds, and they share exactly the same set of genes. (The differences in dog breeds lie solely in which version of each gene gets expressed, e.g. coat color, jaw size, floppy versus stiff ear, how small or large specific bones grow, an so on.)