I can't speak for the older model vstrom like Pichulec's above but for the 2014 model on you do not need to remove the alternator cover to replace the clutch pushrod seal. Yes it would give you much more room but you can get by without removing it, plus no need to drain the oil either if you don't remove the cover as seal is above the oil level if the bike is on the main stand.
In my case I think the chain lube picked up some road grit and took the seal out, 150 mile from home. I rode it home, stopping often to check the oil level but it didn't go down much, looked and smelled worse than it was! I now only use engine oil and a scotoiler on the chain.