I have a double vertical paddle mag pouch which works for my 1911's and my PM45. Rarely ever wear it these days. My favorite is a Single vertical looks much like your's pictured only vertical made by Beardog, a member here. (who hasn't checked in for quite a spell, I might have to investigate). He did a great job on it and it's my go to if I go anywhere. I understand your fondness for the horizontal and have considered looking for one. Feel kind of the same about a scabbard for my belt knife. Horizontal or canted would be kind of nice.
In Memory of Paul "Dietrich" Stines.
Dad: Say something nice to your cousin Shirley
Dietrich: For a fat girl you sure don't sweat much.
Cue sound of Head slap.
RIP Muggsy & TMan
"If you are a warrior legally authorized to carry a weapon and you step outside without that weapon, then you become a sheep, pretending that JOCKO will not come today."