Shoulder Holster for Glock with Optic

[Harry Flashman]

I have a Galco shoulder holster I use when I am carrying on a long drive.

Does anyone have experience with Galco's S3H shoulder holster for an optic equipped Glock? I like the idea of not having to buy the whole rig again, just swapping out the actual holster.

Looking at the photos I could not tell if the holster would carry a Glock with an Acro.

It did not give a great deal of information on the website, just said supported optics.

Any idea how a 509 or Acro would fit in this holster?

Any other better shoulder holsters for optic equipped Glocks?

Thanks.