Wetterberg, do you have a bigger latency than the one you can hear in the video? In this case maybe there's a problem in the audio card settings: the delay shouldn't be very long. What platform are you using?
I don't think the freqshifters can cause too much latency, because they are in the time domain.
Your band friend wants to use the device as a Max patch? Yes (s)he could order it and then copy and paste it in a patcher window (and also put all the externals generated by the "unfreeze device" command in the search path).
i just bought it . its amazing how far you can go with it . Im not a fan of too freaky tools that make everything atonal which is useful for effecting or drumming but not for the musical tone aspect of my work .
But this device definitely can do both and im verry happy u didnt gone too far with UI/UX and the amount of controls :) fantastic work , incredible concept . Thank you