“Dive and drive” might be a great idea in a lightie searching for a break in the cloud base, but IMHO, it’s a very bad one in anything bigger. For all sorts of reasons, I’m in the “cook up a glideslope” camp – but I believe the glideslope, (indeed, the entire approach), should definitely “cooked up” and proven by a Nav Department on the ground, and definitely not by a crew “on the fly”.
Just my opinion.