I have no experience with those mags, but....Bravo company makes good stuff.
My guess is someone will tell you they suck because they don't have the latest greatest no-tilt followers and they are aluminium.
What I will tell you is they look like my mags and followers and I know my mags work.
One day, I shall come back. Yes, I shall come back. Until then, there must be no regrets, no tears, no anxieties. Just go forward in all your beliefs and prove to me that I am not mistaken in mine.