I used the factory clip and attached it to the outter lip of my ammo pouch, that way if I need to see it I just lift it slightly then drop it back down. I’d recommend putting a tether on it.My vest has a pocket for the Garmin Alpha. You can see if it's something you can add to yours.
Ooh thanks for including a link too. I’m going to pick one of these up for when I want a touch more protection.I use this and really like it. I attach it to my bino harness or pack shoulder straps.
Latitude GPS Pouch
Discover the Latitude GPS Pouch designed for quick access on the move | Sits on your chest attachment, Bino Defender or backpack strap | Purhase Nowhunterselement.com.au