Ah, I didn't mean to say that this combo couldn't work, but if this make-up isn't pretty decently geared, on the pulls I'm talking about (which is the tank pulling every single group he can between where the dungeon hard gates you from progressing more), I've yet to see this combo or any combo with a melee dps clear the trash in way that would actually save time vs. doing smaller, 1-3 group pulls.
For example, pulling every group between the 1st and 2nd boss in WP HM up until you have to stop. Most of the groups I've done this with have the dps at at least i110-i115 but unless we have a BLM/BRD combo, these huge pulls end up taking longer than smaller pulls would've- not to mention I can't dps at all myself since the mobs don't die fast enough and the tank has run out of cooldowns and thus requires more attentive healing.
