It feels like I’m sacrificing some stats on my relic slot just to gain the ability to dual-wield. If I go this route, would it make more sense to use Savagery/Primal Strike (focusing on +%lightning), or go Firestrike route and focus on Fire dmg? I have two Flamebrand sitting in my stash, but I also have a Crystallum and Light’s Defender Gauntlets for later.
Looking for something to tips the scales so I can stop procrastinating and get this toon on the road! 
Thanks!
You can go either. You could DW-Stormhearts and focus on static strike.
But a good dagger rolled with God like affixes would make either route awesome.
Does it make sense to dual-wield. I like the idea…but having to have an item to do so makes me worry.
It can depend on the item and what you lose for it.
Direwolf Crest is a good option as it offers bonuses to Savagery if you go down that line and a fair bit of OA. It’s also preferable to use because relics like Ulzuin’s Pyroclasm are just too good to pass up.
It seems like, if I went with Fire Strike, that there is no itemization to support it while dual-wielding. I feel very penned in on this one in trying to find a Demo build that doesn’t end up being a Commando. 
A DW Fire Strike Elementalist would be similar to a Saboteur, but a bit tankier for less DPS i think. You’ll have to swap out your relic or medal but the gearing should be more or less the same.
I agree with Baka. It seems like the only thing the Shaman tree would offer to a DW Fire Strike build is survivability through Wendigo Totem and Mog aura line and maybe Stormcaller’s Pact. Possibly Wind Devil line for phys/lightning and -% elemental resist, but Crown constellation serves the same purpose so eh. Seems like you might as well go Saboteur.
Going DW Savagery seems a bit better because you can get +lightning from Demo to buff it (as opposed to DW Fire Strike where you can’t get +fire from Shaman). Using the Demo tree for CCs, VF, Flame aura and Blast Shield while focusing on the Savagery line and other survival skills seems like it would be a nifty DW build that’s more differentiated from other DW builds.
I like where you’re taking this. I think I’ll go Savagery. It’s a flavor that is different from my current toons. It is still unfortunate, though, that I essentially sacrifice a slot just to gain dual wield. But, meh.
True shrug. At least going Savagery will make going Direwolf Crest less of a bitter pill to swallow.
Don’t forget BWC with High Potency!
You do realize there’s blademaster’s talisman right?
That’s always an option, but using Crest frees up that relic slot for something like Ulzuin’s Pyroclasm. I only mention it because it’s mentioned in OP that he’s not terribly thrilled about losing his relic slot.