I punched holes in some Malice clips and mounted a Serpa to it. I'm sure you could do the same with another holster.
It was a bit flexy though, the strike plate adapter makes it into a much more solid package.
If you go for the chest look for one with the holster that goes over the rear sight. You wouldn't want this one for the belt or dropleg since it would foul your pistol but here it's fine.