Within the last week, I've exchanged a few E-mails with Angus regarding availability of the SP-01 Shadow.
I ended-up purchasing a "stock" SP-01 and will slowly begin to make Shadow-type mods as the $$'s become available (probably first changing-out stock sights to the competition rear sight with fiber optic front).
To the best of my knowledge, the Shadow is a custom modified CZ 75 SP-01. Angus is apparently currently doing these modifications and may (soon) have Shadows available.
Here's the URL to his Web site, there's a "Contact Angus" option if you'd like to check directly with him:
http://www.ghostholster.com/index.html
Also, here's the URL to the Shadow specs on the CZ-USA site. Current MSRP is listed as $850:
http://www.cz-usa.com/product_detail.php?id=74
Hope this info is of some value.