Well I went all the way through it on a new parent VM...created a .msp (included license key and command line from your picture).
Everything installs, activates, no problem on the parent VM.
However, when I create my linked clone pool from it, it still prompts me for activation.
Argh!!
Thanks for your suggestions, though.
Just to confirm, did you say that your linked clone VMs do not prompt for Office 2010 activation?