220 Carry Elite Dark. I want an IWB holster, on the lower-cost end

blackhawk nylon sleeve 10.00

Blade Tech IWB

That's a nice piece and somewhat heavy.  I only have a Crossbreed for my Sigs.  But I would consider that style at least for the comfort of all day carry.

I haven't tried one yet.  But Alien Gear has been coming out swinging with their Hybrid holster.  They seem to be everywhere at the moment and they are cheaper than the Crossbreeds or Comp-Tacs.  They also seem to have better tension adjust-ability than the other Hybrids out there.  I'm really thinking about giving them a try when I need another holster.  Plus they offer front shell trade in.  So if you get rid of the P220 for something different, you can trade the P220 shell for something different.  Which I don't think any of the other companies offer.

Comp-Tac  "Spartan"

Does anyone know if a desantis sof-tuck will work? They make one for the 220 carry but their CS wasn't sure if it would fit mine

Look at Ebay. Lot of bang for the buck over there on holsters.

ETA

ONE Example

Alien gear is amazing stuff for the price.

EBay is where I bought almost all my holsters.  Most are handmade in USA.

You will find no better than this one right here.  Have changed over to this for all my carries.  Gavin is also kick ass for customer service!
firearmholster.com

Yup. I've been carrying a P228 daily for almost two years in a Bladetech Nano IWB. Awesome holster.  Someone mentioned Crossbreed, too; I have a Crossbreed for one of my other guns, they are also high quality and very comfortable.