That triple rig is for competition use and is not really all that practical for CCW use.
The Comp III is a large unit and will be difficult to conceal. Better bet is the Comp I or Comp II unit.
And as far as Safarilands losing rounds -- I've carried them over a decade and never once had them drop a load -- even when hurled at concrete floors and brick walls deliberately to win a couple of $50 loud-mouth bets with people who "knew better." You have to positively engage the central release button inside the rounds against the cylinder star of the revolver.
Please note: this is not a bull-baiting reply.