Blog lowercase L asks an intruiging two-fold question;
"Ever notice hand-written signs with letters in all-caps, except for the letter L? It looks like an uppercase i ... WHY DO PEOPlE WRITE lIKE THIS? "
Yeah, Why do they?
It couldn't be because the descender on a capital "l" creates an unatural amount of space that may greatly affect the overal design.
People who make handmade signs don't consider design, or kearning, which font designers do.
Still though, I applaud linguistic nitpicking, especially if it has photographic evidence.