I put a point in Ice Shards in my spec as it gives me 2 guaranteed charges of FoF (well not technically but it hasn't failed to give 2 charges yet) after AoE phases. Of course such phases are not in all boss encounters, but there are quite a few (Occu'thar, Maloriak, Halfus if he has whelps, add duty for Beth'Tilac and etc) and I find it more effective to come out of an AoE phase with FoF than with nothing. Might as well have some powerful burst right after preforming some so-so AoE.
But on flipside is that point worth going somewhere else?