I purchased a LNIB Galco Jackass rig for my Ultra CDP from an ad posted here, or over at
The 1911 Forum - can't remember which.
Overall, I like it. It is comfortable, conceals well, & as a bonus will also carry my 5" Classic Stainless if I choose to.
One thing I am not crazy about: the off side mag carrier is not adjustable for short, Officer's sized mags. If you look at the mag carrier for the Miami Classic or SS II, the straps that fold under the mag & snap to the outside body of the carrier will have two snaps. It allows the straps to be shortened for a short mag. While it's not a big issue (didn't stop me from buying one) & the mags don't rattle around or anything, I thought is was one feature of the Jackass that could be improved by borrowing from the newer MC & SS systems.
I'll also agree with nifman: I seldom use a shoulder holster. I would wager that there are more shoulder holsters sitting in drawers & hanging in closets waiting for "the right opportunity" to be used than there are people using them! They look cool & can be comfortable - the better designed ones are, anyway. But unless you
always wear some type of outer garment that effectively conceals the rig & looks natural & feels comfortable in
any environment you find yourself in, or you don't have to worry about exposing your weapon, they can become a burdon. I speak from the experiance of trying to look natural & remove a winter coat, then remove my shoulder rig, then hide it in the car & replace my jacket while in the driver's seat of my Subaru...