While I haven't had any flushes yet on my Meyer Lemon, my cocktail tree (Honeybell Tangelo, Ruby Red Grapefruit and Navel Orange) and my Key Lime have put on beautiful flushes of growth and the leaves just look amazing.
While I took a hit from that cold snap, I'm pretty sure its responsible for killing off the critters that did a lot of damage to my leaves last year.