in Montblanc boutiques in Singapore but only a select 1 or 2 of the boutiques (the airport ones don't carry Villerets for eg). The ADs also carry them but some of these are the very old stock 47mm chronographs from 2008 which are a tad too big for some Asian wrists.
As for the newer 1858 Tachymeter or some of the more popular Villerets, we do need to order them in advance even without seeing the watch in the metal. Quite rare to see one lying around in a boutique or AD - I think some purists were lucky to see them in the boutiques but not here in Singapore for me.
Cheers
Robin