get a Cross Check and do what you will with the SteamRoller. The LHT excels with two sets of panniers but if 80% of your riding is unloaded you'll enjoy the CC a lot more.
A 26" wheeled bike can have fast/light wheels that won't feel much different on the road and will accelerate faster than fat 700c tired wheels. But that's really cross purposes to the LHTs design.
You can find a variety of 26" tires and you can have wide 700c tires that hold up fine in the dirt.
If you like 28mm Marathon Pluses you'll love 32mm on bumpy roads.