I dipped my first unit last week, some Spanish Caetrati, and I've only just managed to varnish them, as below.
I used strongtone dip. This worked very well, except on the whites which became rather too dingy. However, I overpainted the whites and was pleased with how they came out, especially as this means I will be able to up my painting rate. I'll take a better photo when they are all based up.