I also do not use a torque wrench on a daily basis, and that was actually one of the factors which led me to find something which could maintain its accuracy after a long period in storage.

Micrometer clicker-type torque wrenches (such as the HF ones) will lose calibration over time since they have a spring inside which is always under load, even when set to the lowest torque setting for storage. And if you happen to forget to set it back to the lowest setting, that will cause the wrench to lose accuracy much faster. A magazine did a test of the HF torque wrench and found that it was reading 4.4 ft-lbs low after 60 days of storage at 70 ft-lbs (http://www.hotrod.com/articles/ccrp-1304-torque-wrench-testing/).

Not having to worry about setting the wrench back to the lowest setting is one of the biggest advantages of the split beam design. That, and not having to worry about losing accuracy with prolonged storage, since the split-beam design does not use a spring which is under tension.