TI is owned or owns (not sure which) Sabatier, you can find their website and send email inquiry about customized TI.
could this be the official website:
Thiers Issard
I placed my order through rasur pur. Told them what I wanted and they got it made.
I'm sure any ti vendor can contact them with the order for you.
Interesting! I have been looking to purchase a grelot like TI quarter hollow blade. Did you have to pay import duties when ordering from Rasurpur to Canada?
I didn't have to. But sometimes you get lucky. Just like when ordering from the states.