Err... I'm inclined to side with Scythe and Firebug. My understanding was it gave the mage a magical intrinsic understanding of the object. I read it as some sort of mechanical device. I wouldn't be as harsh on device (I'd be ok with AD cast something like a water wheel.) But obviously inanimate objects are outside the purview of the spell. Smartgun? Sure, I abuse it myself. But you can analyze your boots all you want, it won't give you mad dancing skills (Or any other skills for that matter.)
You seem to have [...]
missed this part:
"This spell allows the subject to analyze the purpose and operation of a device."
The 'Purpose and Operation' of boots is not dancing. Or Climbing. Or Stealth. Or kicking people in the nuts.
Honestly I'd probably just give you a bonus on any tests to successfully wear boots since that seems like their most basic purpose...
And maybe shoelace tying...Hmm...
Seriously? Not even tap dancing?

Besides, you are focusing on the wrong part of the spell description. It's about the last part:
"Each net hit also gives the subject a bonus die while operating the device and allows the subject to ignore any skill-defaulting modifiers for using it as long as the spell is sustained."
If you kick someone with your boot that is no different from having one of those shiny new cyber claws. Why would you deny the boot (which is explicitly stated to be a weapon) that bonus?
Also the text mentions that the boots influence your stealth check (negatively by providing a bonus die to perception), therefore this is part of "operating" the boots.
Granted, the text says nothing about running, but since your foot wear usually has a major influence on running, why would you arbitrarily exclude that from operating your boots?
@Duellist_D
Sustaining can be handled the normal way by foci and adept centering (as well as having an attuned animal with living focus, but that's another topic).
Analyze device is useful and versatile enough to boost your skill in spell casting: It allows you to use effectively every piece of equipment you find. That includes a space shuttle (if you get lucky and it rolls low on its object resistance roll).
It's good enough that it might be worth to get the Quickening meta-magic.
With that you can try every day after you wake up to cast with edge and hope for the perfect roll vs. the perfect low roll on OR.