AND(
  OR(
    ISBLANK(LOOKUP(USEREMAIL(), "Revenue Filters Slice", "User", "From")),
    LOOKUP(USEREMAIL(), "Revenue Filters Slice", "User", "From") <= [Date]
  ),
  OR(
    ISBLANK(LOOKUP(USEREMAIL(), "Revenue Filters Slice", "User", "To")), 
    LOOKUP(USEREMAIL(), "Revenue Filters Slice", "User", "To") >= [Date]
  )
)