The cable is hard-wired into the active head on the vm44-link cables. These are removable capsules though, unlike the DPA402x series, so you can unscrew the capsule (eg, cardioid) from the active head and replace it with an omni or hyper cap. Meaning, all you need is one set of bodies+active cables, then as many capsule options you'd like.
The active cables though hard-wired at the active head/capsule side can disconnect from the bodies. The connector isn't like any I've seen before. Definitely not the normal lemo connection, but I have no idea who makes the connector.
I think whether you wanted the vm44-link mics or the vm44 classic is just a matter of personal preference on using full bodies vs active cable mics. Same deal either way, unscrew one capsule and replace it with another.
Edit: Also, I believe the vm44-link is balanced. I've never seen the circuit schematic published or dug that deeply inside, but iirc the connector is a 5-wire connector (or at least is 5 pins, not sure if all are attached). Also, I'm pretty sure the links use belden 1804a cable, which is 4 conductors plus shield. That indicates to me it is a balanced approach, not unbalanced.