The short end broke off one of my racking canes, so I cut and filed it just as you mentioned. I used it the other night with my bottle-filling attachment and it worked great. If you don't mind losing the angle on one of your canes, go for it. I've found it handy in other cases too and the siphon seems to go faster without that extra bend.
Q: Why don't elephants like penguins?
A: They can't get the wrappers off.