Oh but I wish you could. Below are some pics of one of my converted Perry Miniatures knights. A single model is a bit easier to view sometimes than a whole group of them. I converted some their normal Normans to look the way I wanted them to look.
Their normal Normans just have mail armor, I wanted a sleeveless surcoat.
The horses are normally just naked, I wanted to change that also.
The shields normally have bosses and are a bit smaller, from the 1090's period. I wanted something to change that, and these GW High Elf shields were close to the style and shape that I wanted.
The basing is the same as the Hospitallers.