I think even thought the extra gain is fun, the stock Tweed circuit offers more than enough gain and is more versatile and musical in the long run.

That Champ Vibrochamp difference may not be cap, it may be extra resistance in the signal path introduce by the trem circuit.  In the larger Blackface Fenders, the "vibrato" circuit adds about 56K of resistance; obvious the VC uses a complete different circuit but I don't have a VC to poke around in.