The Slash tie-in has always been sort of a mismatch for me as well, especially since I’m used to the 30’s and 40’s scores for these characters.
To me, it has seemed like a way of modernizing them to make them more of an attraction to the GP.
That being said, I’m not sure the Slash tie-in is really moving the needle as far as the popularity of the houses go, although that is purely anecdotal.