Timing chip placement

Here is a question, how do you decide which shoe to tie the timing chip on? I realized that I always put it on my left shoe without thinking. I use my right hand, so I thought it might be related. If it were so, one would expect more chips on the left shoes than rights. I took a quick count while I was waiting for the start this morning and it seemed to be 50:50, i.e. almost random distribution. This pretty much negates the handedness effect hypothesis.

So I wonder. Do people place their timing chip randomly or do we all have a favorite side decided independently of our hand preference.