Tried it. I created two notes, got their public addresses, and sent bitcoin back and fourth. The inconvenience I notice is that I must withdraw fixed amounts (e.g., 0.001, 0.005, 0.01 etc.). Fixed amounts isn't the problem per se. What might annoy someone is that you enforce an arbitrary fee rate (2500 sats per address). I don't get why you don't let the users choose themselves. At the moment, I have about 800,000 sats in notes, and I'll have to mix another 200,000, so I can merge them together into 0.01, to save 7500 sats in fees.

You're also showing in the main page how many anonymity sets there are. Is it because it's trivial for an advisory to figure that out in the chain?