Yes Ross, clean your brush with water. The brush will eventually get a bit glogged up around the ferrul but it easily cleaned by soaking in Isopropynol, or amonia.
Just take your time when brushing it, to avoid creating bubbles. If you do simply swill the brush in water and go over them (before they dry) or add a little more Klear to smooth things out. It is really very easy to do, the bigest bonus is that you don't clogg up your airbrush. If you do airbrush it, ever, like Andy does on armour warm or hot water cleans it up quite well but when I have done it I have never been sure that I have got rid of all the Klear. If any dries in your airbrush it will be a sod to get out.
Mal