killer you doing the leg work jamie. fwiw most peeps mics here they want to use have a trs connector, the rode has 2 trrs connections, so you need another splitter just to run mics with it. That's 2 long ass splitters. If you have a battery
box and don't need phone to power mics, I'd go with the sonic port 6, it's only one box, takes a line in stereo mini input and is usb powered. Another option which I haven't tried yet, but would be easiest to me it seems, is apple camera adapter. It's a lighting to usb cable (usb lets it record in stereo), then take any usb into it. Should provide 5v usb standard power perfect for small mics. Many cables made now days that go into usb. I've know usb mics can be pwered through a usb hub and feed this way into the camera adapter. I think lighting > usb dongle might be smallest footprint.