I have one for a Glock 43, Ventcore model.. I like it, most of the use has been in AZ. It's breathable and does pretty good in the heat.
The retention clips for your belt or pants are adjustable so you can get a few different angles depending how you like to carry. For the Glock anyways there is room for good grip purchase while drawing. I've had now issues with it and it seems like a quality rig.