[JamOfBoy]

Unless you're across the map (which you shouldn't be, as a Boxer) or being kited, using basic movement and then a boxer skill often results in a net loss of one (1) or none (0) schwarz sturm, and you're still dealing damage. Most boxer skills grant one (1) schwarz, with the exception of regenschauer which grants two (2). Walking up and using regenschauer means you lose a total of 0 schwarz, and using any other sensible boxer skill means you lose only one. You don't really lose much.

If you ARE being kited or across the map, you also have the option of doing nothing if you're truly that desperate to maintain big damage octonary number. Keep in mind using Orkam Drehen (which has big, BIG range, likely bigger than your movement) uses two sturm too, but chances are you'll deal damage using it and be in range for a follow up regardless.

In the off chance you have zero schwarz sturm and you're inflicted with clumsy, you have nothing to lose anyway! You can't orkam but walking isn't going to negatively impact you. It's not a good situation, and I have to wonder how anyone would get in it.

So in summary, I don't think this is really a big deal, and clumsy doesn't really affect boxer much more than being one tile diagonally away does. Being unable to geist at all does suck, but it isn't like it completely ruins you. No good boxer relies on geists.