As this looked to be a long conversation, Brad and I discussed this off list.  Here are the take away points:

• Using SPM12's "Inclusive Masking" with an ROI is not the same as a ROI analysis. See https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind1205&L=spm&D=0&P=394215 and http://www.ncbi.nlm.nih.gov/pubmed/12880848.
• When using SVC, something must survive the initial thresholding.
• SVC is only updating the FWEc p-values listed in the table, but not updating the p-values used to pick which voxels are displayed.

Please let me know if there are further questions/comments/concerns.
Ben