Leafcutter Bees Will Probably Use Houses for Blue Mason Bees

Q. Someone gave us a Mason bee house to use. I saw in a July 2011 post on your blog that there really aren't mason bees in the Las Vegas area but there are leaf cutter bees. Do you think the leafcutters would use the Mason bee house? I know leaf cutters stuff the hole with leaves so the fact that the Mason bee holes are larger might not be an issue.