I've done MSC on the Martin Maxxys, but I don't think I've tried to install a generic USB MIDI interface on the M1. I have been able to do it on Martin M-PC, so in theory it should work. You can also send Telnet commands to the M1. With Qlab you'd need to do it using Applescript and Terminal, but it is possible.
I'd still really like to see a native Telnet command in Qlab.
Drew