When we had our house interior painted, this is exactly with the guys did with the primer coat. Very fast and looked great.

I put DriCore in my basement >10-15yrs ago. Yes, was a bit expensive as noted, but went down quickly and without many complications. I do enjoy that my carpet and pad are not sitting on bare concrete. Much warmer underfoot.

Our basement floor had some condensation issues prior to finishing the basement. No issues with mold/mildew all these years later. We do run a dehumidifier in summer months that drains to my AC condensate pump for a hands-off solution. I am presuming the fact that the DriCore stands off the concrete permits moisture to be removed. I am guessing carpets alone would have been a stinky mess by now.

Pins are happy down there.

DriCore R+ looks like it adds an R3 of foam insulation; seems pretty minimal. My DriCore subfloor with carpet pad and Berber carpet seems to do a good enough job. Cold carpets have never been a thought for us. Note: We only partially heat this space via forced hot air,. It's generally pretty cool down there, unless we open the nearby vent to warm things up a bit while we play. Still, it's air temp, not carpet temp that we mostly feel.

http://www.dricore.com/en/rplus_about.aspx

My first thought looking at the R+ product was it seems like it would add LOT of surface area in contact with the concrete, reducing airflow to a fraction of the original product. Maybe they have infused some sort of anti-fungal agent to the material?