I don't use anything else with the clip. With the weight of the glock trigger and the trigger safety, I dont have any real concern about it going bang on me. When I am floating around Kerr. though, I don't carry it chambered. If I go into SA or a place I am not familiar with, I load one up. So for me it's 90% of time with nothing chambered.
I like the vanguard system though. I may have to pick one up!