It really depends on what you are making but I know we use them for compacts all the time and get very very fine detail. We always design a reveal or something of the like to hide the witness line though. You may be able to speak with whomever is molding it to see what the witness will be like. Depending on the size material and color, it may be indiscernible.
Yes to all. To get the best info you should speak with a vendor about the differences and advantages of IMD/IML. You do need to account for the fact that the depth of your molded part can be limited, and that the shape may get distorted on your part. Typically it works best for fairly flat parts or surfaces that only curve in one direction. Compound curvature can get wacky quickly.
Thanks a lot guys… I appreciate the expertise. I talked to the molder and it turns out the minimum volumes are a little too high for what I’m doing - I think I’ll just go for for a different surface treatment on this one. Thanks again!