If you break a spring, it's going to be sluggish at first. I would say you will be more likely to slam the blade shut on my knuckle fidgeting/fanning it open than for the omega spring to break and cause it to fail. Most Axis locks fail due to people spine whacking them than the spring breaking. Two springs give you redundancy. If you are open to an automatic, the Adamas line of that flavor has a sliding safety that keeps it from opening in your pocket (please use it. I found out the $1000 copay way 9 stiches later that it is a good idea). That same safety can be used to lock the crossbar forward. It doesn't come into play with the omegas at all either, so if one or both fail, it is a reasonable back up.
Same with Barrage. With the lock slid forward it has to be one of the strongest knife locks there is and there are videos out there showing that.