huh?
no plastic clip on the waist belt. If you're looking at the images on the "package" those are the weight pockets which are option.
The wing has integrated roll control and does not require a STA. Using one is personal preference but my Deep6 rig does not have a metal STA nor do I find the need to use one since it is a dedicated single tank rig.
Why do you need to drill 2 extra holes?
The only reason I am a proponent of an STA is if you're poor like me then you can switch the same bp/ harness between wings effortlessly, otherwise I'm stuck undoing cambands.
In a perfect world (maybe one where I didn't have so many baby mama's / kids!) I would just have 2 setups and prefer the closer tank with the integrated roll control.