For my money there is no finer IWB holster than a Sparks VM2. Worth the wait and worth every penny. I have three now and one on order. One of those is for a full size P220R (which also fits my P226ST) and it is "all-day comfortable". We're similar in size so results should be appx the same.
If you want a traditional IWB (i.e. belt loops on the gun) with less wait and a lot less money, try here...
ROG holsters rog holster rogholsters gunleatherusa gun_leather gun leather holster IWB
Only make one style OWB and one IWB for a limited number of guns - but if your P220 is non-railed he makes one for it. I got an OWB for a 1911 pattern commander style gun and was really impressed by the workmanship.
Ditto on the former comment about the Beltman. Great product, great price.
HTH
Adios,
Pizza Bob