Yes.
Even on my Dark/Fire that just hit 22 and doesn't have Consume slotted at all yet, I'm finding it more than bearable. Once I get some global recharge and the powers properly slotted, I'll be laughing.
I went ahead and picked up stamina. A Dark/Fire build is plenty flexible, and a reliable boost to your end trumps at least one of the two targetted and long recharge boosts available with that combo.
YMMV of course. Fully slotted for recharge you can bring the recharge on DC and Consume down to around 90 seconds each, so if you alternate them that's 45 seconds between boosts. Slotting for end reduction helps, but in later levels Carnies/Malta/Mu have made those 45 seconds seem abnormally long for me without Stamina.
Of course, global recharge bonuses from IO's can bring the space between end boosts down considerably, but then you also have to waste that many more slots to maximize their end return for hard targets like EB's and AV's. That also means endredux slots in attacks that could be used for sets, procs, or elsewhere for tough/weave.
Can you get by without Stamina on Dark/Fire? Sure. But with all the factors needed to make it as end efficient as just picking up Stamina, my preference was to go with Stamina. If you drop either DC or Consume in return, it's only one extra power slot, and you'll likely not miss Burn.
The Scrappers' Guide to Dark Melee | Kheldian Binds and Strategies
Would the endurance recovering abilities of Dark Consumption and Consume combined be enough to not need to get stamina?