Hi Matt,
I too am interested in being able to wrap IMX-D10 files to MXFs, compatible with the EVS XFile. The XFile software is free to download from
www.evs.tv - you can only run it on an XFile PC, but it comes with a useful MXF player and with a couple of IMX MXF header/footer templates and some other MXF templates. I can send some MXF file sampes and/or the template files if you're interested. The native format of the XFile is "EVS MXF" but I've discovered that with some coersion it is able to read OP1a files.
Cheers,
Dan