i agree to this on a specific level:

I myself WHM and i myself DPS, rotating in and out of cleric stance, however the DPS is very situational, if a tank wants to do a big pull, second i see Hallowed Ground ill go pop 1-2 holy and then return to normal again, however if hes pulling flower patches, then i'll dps more than even heal him, 50% of his hp pool is safe enough depending on the amount of mobs.

TL;DR I dps, bards a tool, keep on trucking.