I'm actually in the process of trying out various attack vectors. I'm trying to find out if it's actually possible to get access to everything besides /home as the Xperia 10 III doesn't have any custom recoveries yet. About the encryption I'm not sure tho. I could try and also encrypt dalvik using the same LUKS encryption but im afraid that might break some things. At least the /home folder is fairly safe if you choose a strong enough password.