IB gear = fake 310s which means you are booted from my fireteam.
IB gear drops at 280 so you will have to infuse your way to 310 which isn't worth it. Plus using IB gear in the raid is worthless anyways.
Edit: only true year one vets know what I am saying. See all the salt posted below!
Edit 2: updated satire tag. Salt game is strong!
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I was at the launch at my local GameStop, and I feel like it doesn't matter what you have if you can get to 310. I plan on infusing my raid gear (a second set) into gear that I like the look of. No harm in that to me man