I got a pair of Easton Orion IIs about a year ago. I think they're based on the same basic idea as the Tempest and Ascent, but the Orions have a few more spokes for the burlier road-warrior. So far I've covered about 1000+miles on them on pock-marked Hampshire backroads and they've not needed truing. They feel VERY strong, and I really have to go some to get any rubbing on the rear brakes.
I believe the only down-side is that spoke replacement is not something yer average LBS can do as they are threaded Easton-only specials, but I stand to be corrected.