I'm a little confused by this but I assume you're talking about marking files for LFS (.gitattributes)? For us, we chunk every file (even if it's a single chunk) so every file is stored in the same way -- it's just data to us. But let me know if I got your question wrong.
Yes Lore looks awesome! I was previously working on a VCS for gamedevs -- that space definitely needs something better than Perforce haha. My comment would be that I think you need to nail a new GitHub + Git to really be successful in the space and I'm not sure Epic is focused on this. I wonder if Lore will turn out similar to Unity Version Control which is very specialized to Unity workflows or something more general. Definitely love what they're doing though.