Use a
bike gear calculator and plug in your gears and typical cadence. Then see at what speeds the compact double shifts from small to big ring. It might overlap your typical road speeds. It can be annoying to have to switch chain rings a lot, if you are often riding at end of the range for a chainring. With triples, you can be in the middle of a range more often.
I like my compact double. When slowing down, my Campagnolo shifters let me shift from big to small chainring, and go up 3 or 4 gears in the back with two thumb pushes.