Sometimes my aliases get in the way of binaries in $PATH. The aliases here seem to me to run the same danger.
There was a post about prefixing aliases with a comma some time ago. I thought that might be of relevance here (can't find the post anymore...). The idea being that you use aliases like this: alias ,somecommand="echo foo"
This avoids collisions and also allows you to iterate your aliases with autocomplete by typing , and then tab. Very handy :)