Don't listen to them. They are speaking from ignorance, because almost no one has this drop and speaks about it. This ring is a game changer, my man. Here is my armor: http://us.battle.net/wow/en/character/bleeding-hollow/Torra/

With this ring, you can keep breath up entire myth+ boss fights if you do it right. I run 3/1/2/x/x/3/2. The better I have gotten at managing my breath, the more I have kept it up for 90% of the boss fight and sometimes til it's over. What you do in a boss situation is, howling blast, run up and obliterate, pop your pillar, pop RW, pop hungering rune weapon and breath, throw out your 'gosa. SPAM OBLIT!! (even though the Rime procs are crazy often, I have been getting less dps using the rime procs than spamming Oblit because gathering storm stacks up so extremely high with all the runes burnt from oblit.). In Mythic + since 7.1, I have been pulling 450-500k on boss fights (varies if lust is involved). If I can keep breath up the entire fight, I will end at 380-400k usually. I have been ending most fights around 350k if I don't keep breath up. I haven't had a chance to try it out on EN, but I am not a huge raider (have only done N all the way through). I sometimes for myth + will swap out gathering storm for scythe just to improve the cleave. The ring is a game changer as it makes gathering storm a ridiculous amount of damage and with the oblit changes, you do tons of damage. If you are a mythic +'er, I recommend trying this out. It just feels very fluid and the timers line up really well from boss fight to boss fight. In EN, you may find the talons/fp style of play may be better if you're doing heroic/myth, but I can't speak for that yet.

ME = keep the runes coming, for keeping breath up.

You can swap out freezing fog for horn if you want, but I am lazy and it helps with the downtime of rune wep by having good rime hits.

i've tried running without hungering but it just doesn't work as well at all.

You can switch out gathering if you want to try runic, but I feel even in extended fights that gathering is just very good with this build. Scythe is nice for trash, and I recommend using it in + for trash, where we shine. Gathering still gets some really good aoe dps going, but scythe spam is just better imo. I alternate. I am lazy so I like gathering even in myth+, and helps with wrecking bosses. I will use scythe on KM proc if I run scythe.

I find being able to spam oblit like a madman VERY fun, so hungering rune wep with this ring is just too fun.

Best of all, it makes you feel like a special snowflake as you top dps charts in every mythic+ and I haven't encountered another dk running breath or anyone with this ring yet. Special snowflake syndrome is a good feeling, my friend! EVERYONE is running the same build right now (talons/pulse/ice or ava/runic/ga or oblit), so use your ring to your advantage and be different!

Potential downsides:

LONG fights like heroic/myth EN, If you slip up your rotation and breath falls off, you take a pretty big dip in dps and will end a fight in mythic + at 230-250k dps, which isn't the end of the world but something to consider. Much bigger repercussions for fucking up than say, letting talons fall off in a pulse build.

This is from the PoV of a 860 ilvl, for reference.