Your expansion may be slower for surveying, but if your partner-planet gives you the key early techs you need, you can focus more on the alloy-side of the economy instead of early game tech until you pop-bloom, and if your border frictions get inflamed, then potential allies in the wing. Without more information it's hard to set expectations, but if the diplomatic demands / tradeoffs are for you to limit your engagements/alliances with other species, but they also work well as a co-belligerant ally in war, then this may be a decent Xenophobe origin. I will be interested to see if these guys have the possibility of spawning a fanatic purifier or something else as part of their xenophobia. which is good, because not everything needs to be.
While there's some technological implications there, the loss of pops and -1 tech option will be killer from a min-maxing perspective. The origin sounds interesting, but bar future insights not meta-shaking.