I haven't used it in earnest so far but I'd carry it in Condition 3 - it's easy to charge using the cocking handle that is attached to the backplate of the glock slide.

I now have a tad over 1000 rounds through it and getting it into action from Condition 3 is fast. This vanguard thingy is interesting though, I'll try to lay my hands on one, just to try it out.