Interesting stuff. I was wondering about this when I used the one issue of PATSY AND HEDY that I have for my blog on paper dolls. I used the credits that are in the comic for Al Hartley. But looking at the inks, I wondered if those were really his--not being familiar with Hartley, I couldn't really say, but the style seemed Colletta-ish.
I guess these kinds of books are on the line between Romance and Humour. Or maybe they should be in another genre of Fashion. But I'm reminded of something I read in an interview with Bob Oksner, many years ago, where he said he had to change his inking style when he went back into super-heroes, from doing humour for many years. On the humour books he used thick line work, but he had to change to a thinner line for he super-hero stuff.
For these humour/romance/fashion comics, I think a thicker line works better. You really want the figures to stand out on the page.