Interesting suggestion.If you're talking VH tone, which you referenced in your title, the SV20 has more than enough gain (distortion) for that tone, But, like I already mentioned, that only comes with maxed or near maxed settings, that's how Plexi circuits work. If you tried a SV20 at anything less than 5 or 6 on the volume, you weren't hearing it's full capability. My attenuated SV20 does a more accurate early VH than my SC20, without boost pedals.
If I want more modern vh w the heavier gain (prob more compressed) tone would a dsl be more appropriate?