Outside of the custom market and not counting seven folds, untipped ties are pretty uncommon to find and even Drake’s only sells a few in a raw silk variety. There is no real benefit – however, on some types of silk I’ve found that they have a habit of becoming easily bent or curled at the tip and it’s something that you’ll either think is charming or infuriating.
Untipped regimental ties sold under a Hartford name, which seems to be some obscure line from Europe. Made in Italy, they’re pretty decent and have a sturdy lining.
I intend on having some new ones made for me this next year, and will report back later.