I don't work with Boolean fields particularly often, so I only just found this need. When looking at a Boolean field inside of a Browse tool, the Browse Profile is surprisingly unhelpful, and states "Chart not available for this data type".
When looking at the same data as a V_STRING, there is a lot of very helpful information displayed:
Obviously some of the String information in the second screenshot is likely unnecessary, but I'd like to see enhancements to support some more information, or at least the frequency chart for Boolean fields.