Safariland will most likely be making both for the foreseeable future.

Had a GLS, it was nothing special, and bulky for what it was. Sold it. If just "hangin' onto the gun" is the need, not actual in-a-fight retention, I'm fine with cranking down the retention screw on any quality Kydex holster.

I'm very happy with the ALS, solid retention, very fast draw, just not terribly concealable, if that was part of your purpose.