The pieces have a nice "tooth" to their surface. Sort of like smooth parts that have had a coat of fine primer. The parts take paint as well as weathering powders and washes easily.
In armor modeling I am not looking for a mirror surface so these parts seem perfect to me.
Given the way they are manufactured, this guarantees no flash, no warpage and no ejector pin marks. The only sanding required seems to be to smooth the attachment point or the gates where the piece might have attached to a larger sprue.
The SINCGARS radio set.
(The radios actually slide in and out of the amplifier base.)