I have a 2000SK. Holsters are hard to find, but not impossible to find like they were 8 months ago when the gun was new! I would recommend KD Holsters or Milt Sparks. Either one is a few weeks wait, and both places make tuckable IWB models specifically for the SK. I have a Milt Spark watch-6 (like their Versa-Max but not tuckable and a bit thinner), and a KD Holsters OWB model. I have a KD IWB tuckable for another gun, it's a fantastic holster.
The SK will fit in P2000 holsters, but you'll have 3/4" or so of "dead space" beyond the end of the barrel. This may or may not be an issue depending on the holster design.