Yep most of the newer ones have a method to let them down.
The Mission decocking is very crude. It can be done but you'd better be on your A game because the weight goes from nothing to 250 lbs in an instant. If you ever shot a high letoff compound vertical bow, you know what I am talking about when you go to let one down. Now imagine that with 250# draw weight. Cocking it is easy though because the weight steadily ramps up then just gets sort of tight just before the cams roll over.
I'm interested to see the Ten Point decocking system. They were already leaps and bounds ahead of Mission when it came to the cocking system. At the time I was looking at them, they had a bow called the Stealth and Titan M1. I liked both of them and especially the Stealth but the dealer I was at said he wasn't having good luck with the customer service at Ten Point at that time and didn't know if they were going to carry them much longer. Kinda made me feel more comfortable going with the Mission.