Even back when I played Warhammer in the 90s, I always thought the Fleshhounds were cool. Highly intelligent, fast and dangerous demons.
I think the evolution of the design of the Fleshhound over the years have been a constant improvement and as such, I jumped at the chance to use them as Hell Hounds in D&D.
I used a new drybrushing technique using makeup brushes and I am happy with the result.