Goback,
Do your want the carrier to carry your ballistic panels or, are you wearing your regular vest and want something to carry cuffs, baton, spray, taser, etc.? I used both a Blackhawk, and a Galls Tactical.
The Galls Tactical held my vest panels in it and was quick and easy to go from no vest, plain cloths, to vested and marked police quickly. However I found that the sides of this type vest carrier rode over my thunb break on the handgun and blocked my gun from being drawn quickly. Felt very bulcky and slow speed. I went to a drop leg holster for a fix for this but did not like the vest. Also, my vest only had an area for the ballistic panels, and no place for a trauma plate. So, your whole interior vest carrier all go into this outer carrier then try to velcro your shoulder straps so the vest will not ride low.
Not very user friendly to switch it out as ofeten as I had to.
I then switched to a Blackhawk. The Blackhawk did not carry the ballistic panels. I would have my ballistic vest on and then put the blackhawk vest on over the ballistic vest. I bought the one were you could mix and match any pouch, holster, etc onto the vest. I liked this more than the Omega because it allowed me to custom place what I wanted on the vest, where I wanted it. It also let me place better products on the vest like the talon flex magazine pouchs. The sides are like, well......a girdle. I still used a drop leg, but could go to the belt holster with this set up.
I would go with the Blackawk again as I have no complaints. A very good product. I purchassed it from Botach Tactical because they gave me a very good police price, but Botach is always back ordered every time I want something so plan on waiting a while if you order from them.
Hope this helps.