I'd go with the CTC, Because to activate the LM it's to long a reach for my finger. Look at the LM site and you'll see it works well on the LCP but they don't show activation with the LC9.
Think 1911 only DAO. I like it on my LC9 and 1911 of which both have a thumb safety but only on one side, as well as the magazine release button. Great for a CCW in my opinion.