My USC arrived back today from Ed @ HDPS. When I sent it in a couple of weeks ago Ed promised a delivery by the end of September. He not only came in ahead of time, but his craftsmanship and service (and the fact that he answers email) are first rate.
If you are on the fence about where to send your USC, have Ed do everything. He also engraved one of my AR Lowers for a future project. He did some sort of duracoat-like finish after the AR Lower engraving that looks great.
Huge, huge +1 for Ed.