Good to see you come back James and with a lovely picture of what looks like a kitless or almost pen, very nice indeed.
As for the ca argument we will have to agree to differ on that, I do think there are times when it is necessary.
When turning a piece of punky spalted fruit wood which is being stabilized all through the process what else would you choose to finish it with?
I don't claim it to be my favourite finish nor any other for that matter, for me it depends on the material, colour , shape, recipient and what I have at my disposal.