Noel,
Some varieties taste much better than the one in the photo (so I've heard).
They aren't as commonly grown in FL, as the round type that you photoed.
Matter of fact, I couldn't find such a tree a fruit and spice park, and I wouldn't be surprised if it's a real rarity outside of it's native range (Asia/India?)
here is an excerpt referring to a superior cultivar named Mitzapuri, from Fruits of Warm Climates, that gives me hope.
"Rated the best was 'Mitzapuri', with very thin rind, breakable with slight pressure of the thumb, pulp of fine texture, free of gum, of excellent flavor, and containing few seeds."
Here's a photo of the one from the Fruit & Spice Pk. The shell is as hard as wood. No insect damage ever! Grows and fruits well in SFLA but very few grow it.....
Nice photo, how would you rate the fruit?
It tasted like a dried citrus-fig combination. OK but not really that good. I would not grow the tree.