I have had this attached to my thumbdrive holster for a couple months now, and I like it set up this way over the holster alone. The drop and offset allows for me to be able to get in and out of my vehicle easier, and prevents the thumbdrive from digging into me in a seated position. At times though, do the holster now sticking out a bit more, I have hit my Glock or holster on more things than before. But other than that, great addition to my holster.
I purchased this item to use the tactical thumbdrive holster obviously. I am a detective and I wear a 5.11 belt as opposed to a duty belt. I love the holster however not the drop and offset kit. On my draws with the kit I felt like the holster would bend my belt a little too much allowing my holster to pivot making it harder to pull out. I wear an external vest.
The offset kit was an additinional plus for lowering the platform for easier draw.
I work in law enforcement and wear khakis and a tie to work. I originally got this to use with the paddle attachment of the ThunbDrive holster. I like the paddle attachment but I wanted a lower riding holster. This did not give me what I was looking for. So I just use it with the belt attachment. The setup is great with the one minor flaw of not being easily removable. But it is a minor, and possibly a user specific, flaw and I can easily deal with it.