I don't know. It's no more reasonable than people who are freaked out  
the first time they learn that their html and css is unprotected.  
Their designs can be stolen?! gasp! Javascript is occasionally  
obfuscated, too. (haha)

If you're really worried, just put some phone-home code in there (in  
multiple places) that contains a crippler, one of your key functions  
or methods defined (in entirely the wrong place) . Then in the end,  
alter those method names to something completely inane, but keep your  
own docs telling you what is what and where it is. Then if your code  
doesn't phone home once in a while, you know.