I've only had my M4 for a few weeks so I'm still messing around with it...but like 3 Mile said, the T/D module seems pretty close to Ch 1 and Ch 2 on my MICA TOL 100.
However, Ch 2 on my IE-4 is different...it's a bit darker with a bit more gain on tap, and very sensitive to pick attack and the volume knob. It's like instant SRV when I plug my Strat into that channel. Very cool tone and it's always been one of my favorite channels.
I wonder how close the Bman module comes to getting the Eg 2 tone? I nearly opted for the Bman in my M4 but went with the COD instead along with T/D, Vox, and SL2.