These are some plastic Gripping Beast Late Roman Heavy Cavalry figures I was given by Dan at Wargames Illustrated. I'd finished a painting project for the magazine and they were in a bag along with some other random sprues and stuff. I'm now using them to form the basis of my Late Roman army, and I've already ordered some GB plastic infantry to go with them. The idea is to use them as either allies or foes of my Goths.
I painted the lances because I really wanted them to be as colourful and striking on the battlefield as possible. It reminded me of being about 12 years old and buying some 15mm minifig mounted medieval knights and using a similar colour scheme. I had no idea if it was historically accurate, but just decided that they looked nice.
As most hobbyists, I've used the continued lockdown to get as much painted as possible. Both for customers and myself. The only issue now is one of storage, because obviously a fully painted and based army takes up more room than if it's unpainted and chucked in a carrier bag somewhere.