You may want to check with B. Nelson. Otherwise, you can always pack them up and send them to Budapest.
I have had them do exactly this (toe tap + heel on a double sole). As long as enough of the toe is left for him to do the normal flush tap, it is a great solution.
Search and you will find. I actually posted a bunch of pictures of exactly this make up in this thread a few years back:
Vass London Chukkas, F-last, Antique Cognac, size 43.5.
Sourced from Notch (thanks again!)
I hope you enjoy the pictures!
MOAR pictures! (Click to show)