Y'all don't know 1INT in private like I do. He fronts alot of composure publicly but he's markedly more loose, irreverent, mockingly playful, energetic, booming voice, booming laugh, merry-making and bantzy. We both are fairly guarded and polite publicly, and far more candid in private in general. If Y'all knew our political views we might get banned. I've heard SLE is apparently not as 'opinionated' as LSI, and that it's due to higher Fe, except I'm an Fe-ego and I'd get burned at the stake by most moderns. This thread is kind of a roundabout formality cause none of us are seeing the essential person, but that's the typical social issues with typology. You have to actually get to know a person to properly understand them, beyond superficial and cursory guess work conformed to theory, because what you're conforming to theory is a snippet of the fullness of their being - the tip of the iceberg beneath the surface.
We've been best friends for 6 years. We're like Brothers. I'm like 90% convinced he's SLE (more than likely Ti subtype). He's sx/so (we both are, it seems). If he's the most badass, cocksure, laid-back-yet-simultaneously-competent LSI ever I'm fine with that answer too.
EDit: Oh and Fi PoLR makes 10x more sense for him than Ne, and he'll personally confirm that.