I find your comment, and implication I am stupid, slightly offensive. Please.......tell me the last time you did a combat fitness test, and what boots you where wearing?
Working along side, and actually being in the military are two completely different things.
As has also been mention here, I also have a set of Lowa's, which whilst offering good ankle stability, I personally find them a heavy boot.
I have used various versions of the magnum boot in both exercise and operational conditions......again please inform me of the last time you tested boots in such conditions?
In comparison to the issued Assault boot, the Spider Elite IS both lighter and more comfortable to run in, and again, as has also been mentioned, it is also down to personal choice and compromise i.e the lighter the boot, the less ankle support.
I came on here to offer my opinion on a lightweight boot, that I have ACTUALLY tested....not get slated by an uneducated civvie.