Having made the mistake of powder coating my prepared trim with clear and being really disappointed with the result a clear finish gave, thick looking, dull and with air pockets due to the fact that the strips are cast and release gas when heated that shows as air bubbles trapped in the clear coat, don't opt for that option.
I have sourced a clear 2 pac designed for polished aluminium, but have yet to use it so cannot say if it's good or not...
Made by Mipa CA Clear
I got mine thru Mipa Granville Sydney 02 9760 0030
Good luck. John
Thanks mate, I'll shoot them a query about our requirements.