Finally, after months of waiting, I got the issues with my new 4" 9mm compact sorted out with S&W (full gun replacement) and the new AGIS ELITE from Tier 1 came yesterday.
Both the 9mm and 10mm fit the holster with no retention adjustments required when swapping between them. While the firearms fit well, the 10mm mag will NOT fit the sidecar for the 9mm. Right now there is no option for that from T1C.
Note: T1C currently does NOT offer a holster for the 10mm so I am using this understanding that this is done at my own risk. You should also make your own decision as if this would work for you or not. I only speak for myself and what worked for me.
Here are the "twins". Solid black is 10mm and the FDE/Black is the 9mm
Both the 9mm and 10mm fit the holster with no retention adjustments required when swapping between them. While the firearms fit well, the 10mm mag will NOT fit the sidecar for the 9mm. Right now there is no option for that from T1C.
Note: T1C currently does NOT offer a holster for the 10mm so I am using this understanding that this is done at my own risk. You should also make your own decision as if this would work for you or not. I only speak for myself and what worked for me.
Here are the "twins". Solid black is 10mm and the FDE/Black is the 9mm