Yes the 26 inchers are stout, I have a hardrock comp also and can say its tuff!,, Wheels never went untrue, even while I was 380 lbs riding single track with mild roots.
Also on My Sirrus I retrued the wheels 100 miles and made sure the spokes were tensioned correctly .
Since then 500+ miles have past and have not had any other issues.
Then my Allez pro with Ksyrium elites haven't had any issues, all I did was make sure they where tensioned correctly before installing them on my bike. Granted I don't curb hop and avoid riding on the side walks. Basically like has been said a hundred times through out this forum, wheels built properly reduce problems.
But then keep in mind this things were meant for 200 lb riders.
Without a doubt you can push 26's harder!
Hard rocks rule!!!! Clydes in house bike. Wonder how many forum members have a Hardrock?