In reply to PrettyLady:
This is something I'd probably do, my 2c...
If its your house why not, the enjoyment you'll get from it will be worth the work needed to put right after.
If it was me, I'd take an area and drill uniform holes spaced evenly apart (to allow for resetting), using the height of the wall. Drilling two at the top for top rope anchors aswell.
Personally I would use 10mm expansion bolts and glue them in addition, leaving them 2mm extra deep for easy covering apon resale of the house.