Apple Corer used for Pineapple?

I want to give credit where credit is due. One of my Team Leaders (cooking teams) Ernest, from Ghana, showed me how he likes to use an apple corer (is corer a word? guess so, spell check didn't catch it).

The handled apple corer which only 'drills' out the core (but doesn't slice) has many application so it has been deemed a multi-tasker and thus gets respect among my kitchen tools. But one of those 'fancy' handled corers that helps pre-slice the actual fruit? Seemed like a waste of time and space considering my knife skills. And even some of you may feel you can slice pineapple rings faster than using a fancy apple corer...but it still doesn't take away from the fact it was a pretty ingenious idea!

From slices to tidbits...turn this one into Cooks Illustrated tips and techniques!