Of course not.
I've tried working on pet projects for 10 minutes before going to work each day. The problem I find is that while I might only do active work on the task for ten minutes, my brain is thinking about it for much longer.
Spending those ten minutes in the morning reduces my ability to do my day job because I've used up a significant fraction of my day's useful thinking budget. I find I can only sustain these pet projects when my day job is in a boring/easy phase. (This might have something to do with getting older - I'm 42, or it might be because my job isn't boring/easy much these days).