I have not tried it, but I can't imagine it'd be too hard. And I definitely agree that 4-pin XLR should be used more, though I can see the large size of the connector being a disadvantage compared to other balanced connectors (like the one used on the RSA Protector). Though the larger connector does also mean it's easier to solder... :)
Agreed. I'm surprised the 4 pin mini-xlr is not more popular for this usage. But the full size is bunches easier to work with.