The 7 (I thought it was 6) honor is the replacement for stonekeeper shards, so its up 95% of the time on my realm...

Even so, how many bosses do you really think you can kill in an hour, Vs instead farming Battlegrounds ?

Battle grounds net 100-200 per match, and you can usually 2 an hour. Even with 50% loss rate (which is not the case) you should get >150 honor per hour from BGs. With heroics, even if you could drop a boss every 4 minutes, which really is barely plausible, thats only 105 (90) honor per hour.

The only reason to use heroics for honor is if you really don't enjoy PvP (then whey are you farming honor again?) or if you're also in need of PvE badges or money.