The Hexawise coverage matrix displays pairwise coverage as each test is run in the test plan. The Hexawise created test plans also put the tests in order that provides the most coverage as quickly as possible (so if you have to release before you finish the test plan you have achieved as much coverage as possible with the tests you managed to execute).
Kathleen Poulsen of Fidelity Investments gave a presentation at STAREAST 2017 sharing her experience using Hexawise to improve their software testing performance.
We were able to reduce from over 12,000 test to 600 tests.
Those 12,000 tests provided unknown but less than full pairwise test coverage. Using Hexawise Fidelity generated just 600 test cases that provided complete pairwise testing coverage.
A big gain for Fidelity was that the testing teams using Hexawise were able to compare and coordinate testing coverage. For example, previously the UI and services teams could not effectively communicate test plan coverage and that resulted in a great deal of duplicated testing. Now they can communicate with each other easily and coordinate their testing plans using Hexawise.