I have the GLS holster on my competition rig. I participated in a LE only three gun match using that holster and my G5 34 was secure the whole time even with me jumping around.
The GLS holster I have is the long one and I’ve used it to hold a few Beretta 92 variants and a S&W 952 with no issues whatsoever.
I don’t think I would use this holster for social work, but it does what I need it to do at the range.