I also have 'rare for the US' LF Silkies -Not bantams, nor are they cross bred. Same size as my Buff Orpington & Columbian Wyandotte. Obviously larger than my bantam, yet smaller than my huge LF Cochin.
It's not that they don't exist. They just aren't common, and are a specialty breed.
I'd love to see pictures of these (and maybe some eggs in this thread...lol).