I have had the standard T8's and wanted something to do PT in and general duties. These are perfect and cannot recommend them enough for use around base. They are a little less supportive that most combat boots, which is a trade off for their light weight, so some might be hesitant to wear them out field. I am not however, and will wear them every field exercise.
Wore them once for a battle pt session and about a week round base before conducting Aus army infantry courses final assessment which is roughly 5-6 hours long and about 20-25km of fast pack marching, running, obstacle course etc worked a treat happy wiv.
Overall i was very impressed with this boot, they are the lightest boot i've ever used great for running and pack marching. Only negative point i have is that the sole will wear out faster than similar boots.