I don't know if you are asking for flush caps or not, but if simple plastic capping, you can purchase cheaply on EBay, and install yourself. They come with caps and nails, you provide the tap hammer and sweat. Until recently ( 1980's forward) Very few people ever used toe caps, even with bespoke or MTO. Most sole wear is generally off of heel and mid sole. Yes, there are some who pronate when walking and actually lift off of toe , but 99% do not and toe wear is so neglible that the rest of sole will require resolving before there is any appreciable wear at all on toe.
It is, in other words, an aesthetic. If sitting, with legs crossed, you want to convey the quality of shoe with Fiddlebacks, sole painting, flushed toe caps- so be it.
Hell, I started wearing EG in the 80's and NO ONE got toe caps. I am sorry , as this becomes a bit of a peeve for me as most wearers never knew of until Vass and a few others offered . Really? Do you need, or do you want, so others can see the architectural flourish of the shoe.