I have not, but I have used Vcaps before and like I said earlier they are just not natural and smooth enough for me. I do not believe in bypassing caps in the signal path usually as it can lead to a nervous and phasey sort of sound. However, the combo I mention above is a special exception and works marvelously. Other combos are tricky and the results may or may not be good. Crap shoot. I have done due dilligence on the Duelund silver foil bypass cap and Jupiter copper foil combo and all is great.