Ive got a Full Size M&P and a Shield, both in 9mm. I was just killing time one day and stopped by a few gun stores. The first had the Blue plastic display model of the Shield, but none in stock. This was the first I had heard of the gun. I left there and headed to another store close by, and asked behind the gun counter if they had any Shields in stock, and I got an almost unanimous "No" from the staff behind the counter. The continued to say that there were none in the whole state and that some of them hadnt ever seen any of them before. Another employee over hearing these remarks asked to which gun we were discussing, and once he learned it was the Shield, he informed us that he had checked one into inventory the night before, but hadnt displayed it. So out of the safe it comes, and into my hands, and I knew I had to have it.
Anyway, back on topic... The saftey on my Shield is fairly easy to operate. It doesnt protrude from the slide too much, so it's unlikely to be disengaged accidentally. It is stiff enough that you can just leave it in the Fire position and treat it like a gun without a safety.