Is this Perth's best ride-thru sourdough bakery?

The side window at the North Street Store isn't supposed to be where you buy stuff - it's where they serve the takeaway food and coffee that you've ordered and paid for inside. However, when things are quiet later in the day, I've found that I can ride up to the window and buy a loaf of sourdough without having to park the bike and walk inside.
I've bought sourdough from bakeries all over the Perth/Fremantle metropolitan area, and this one is my favourite. Most of the others are very good, but North Street just pips the others at the post.
My only worry is that they're now going to be sold out every time I want to buy some.