I have 16x8 Procomp steelies with a weld on beadlock kit. I used bead glue on the inner bead seat area, but sometimes they just let go. I don't think the "beadgrip" wheels are a replacement for real beadlocks, but whatever floats your boat.
I've lost many a bead. Even with beadlocks, the inner bead can let go. I tend to wheel the rocks around 12 psi on well worn Swampers.
The dual beadlocks on the market are prohibitively expensive IMO.