Report filtering Date since last business day

I'm trying to create a table report that only shows records that have had specific date fields modified since the last business day.  I added a Report Formula to the report however the filters are not allowing me to select that as a criteria to compare against.  

The formula I added is:
ToWeekdayP(Today()-Days(1))

I had hoped to add filters like:
Date1 is after <report formula>
Date2 is after <report formula>

Am I missing something (entirely possible) or has someone solved for this problem in a better way?

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Jeremy Lahners
LeadBaller
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