If you are referring to Alex Adventurer rims...they are just fine. I've only had my LHT for a few weeks, but I've been abusing those rims on my singlespeed MTB for quite some time...no problems so far. Its really had to justify buying $60-$80 brand name rims when a $24 Alex rim works just as well.
Edit: If you are looking at buying a stock LHT, more important that the rim itself, is the quality of the build. The wheels on my stock LHT were OK, but spoke tension was a little low, uneven, and the rear wheel wasn't very true. I spent some time working on them, and now they are as nice as any pair of handbuilts.