Quite the friend you are! He'll be pleased with the bag.
I use my Ultralight as a 3 season (well, often 4 here in the Appalachians) and when its too warm (for me this means expected temps over 65 at night) I just use a $20 fleece bag (which weighs almost as much!). You can unzip and use as a quilt when it gets too warm. So, the Versalight will do in a pinch. I think a summer weight quilt (e.g. BMW Cocoon UL 60 or Jacks R Better Shenandoah) would be ideal from night time temps over 50 degrees or so, but I always seem to find a reason to postpone buying one.
When next spring rolls around, there are a good amount of sub-2lb. summer weight options for $150 or less. In warmer temps, you'll naturally be carrying less gear, so weight isn't as critical.