I bought a couple of Muta Jovis modules. Perhaps they are just mine, but there's a voltage drop when plugging in CV. So I wouldn't use them for anything pitch related. You may also suffer a pop when using them for audio.

The DivKid mutes are based on fast acting low pass gates (vactrols). So rather than being immediately off they rapidly bring the volume down or up (like a very, very fast fade). I'd probably go with the DivKid mutes if I was purchasing it all over again. That's my $0.02.