Sharing my experience at Hermes Singapore...
Once i walked into the branch at NAC, with no purchase history and asked for a Lindy 26. I got what i wanted, so I think Lindy is not that difficult to get?
Another time, also at NAC, i saw lady being offered a Birkin in a pinkish-purple tone. Very nice, but she rejected it!! I was trying so hard to control myself so that I didn't jump in and say "sell to me pls!" . That would be too inappropriate I reckon haha.
But in all honesty, I only like some bags like L, K and B from Hermes. I find myself unable to appreciate other bags or accessories (expect the oran sandal which I bought 2 pairs because they are comfortable and match almost everything I wear) and while I find the artwork on the scarves intriguing, it's not practical for me to wear them in our humid weather. So long story short - I realise I will never be offered a K or B from the store as I will never be able to demonstrate my 'true love' for the brand and so I have to turn to resellers which, i know while controversial, works fine for me.