I need to be very honest here: I’d be one of THOSE people. So I’m struggling with how best to answer your question.
Let me ask this: if next year your kids decide they believe firmly in Jesus, what will happen? Will you all still continue to attend the synagogue, as Christians? Likewise, if they decide to be Jews, will you all continue to go to church on a regular basis?
Here’s the thing: I don’t question the depth of your search. I don’t question your intentions as an interfaith couple. You sound like a kind, mindful guy, and your situation wouldn’t affect whether I liked you or respected you as a human being.
Rather, my doubt would be about sustainability, permanence. It’s not that I’d see you as a novelty. I’d just assume you weren’t likely to be around for the long haul. And that does affect relationships. People tend to invest less when they think someone might leave.
You should know that I’m intermarried myself (and my husband didn’t convert), and that my mom and dad were also intermarried (and neither converted). I’m in NO WAY objecting to a household that incorporates multiple faiths. I’m just trying to explain why you may not be able to convince people you’re a permanent member of their community. Until you are.
In the end, we don’t ever really get to control the way others feel about us. But it does sound like you’re getting what you need from the arrangement, for the present. I suspect that when you know for sure whether you plan to stay for good, you’ll feel a shift in the way people respond to you.