Comparing the two..
Ability to draw quicklyThe packs are basically the same in this regard except the Ka-Bar TDI has short loops that require a cord to be tied onto them while the 5.11 Select Carry Pistol Pouch has tabs that are ready to use. For someone who wants a tab that sticks up the 5.11 would be more to their liking. If someone wants sometjing that hangs down and they want to put on their own cord or fob or something, then the Ka-Bar allows that.
ComfortThe 5.11 Select Carry Pistol Pouch is more comfortable for 3 reasons
1) It has 2” belt while the Ka-Bar has a 1.5” belt.
2) The belt on the 5.11 Select Carry Pistol Pouch is adjustable on both ends. That allows you to position the buckle in the small of your back, or any where from completely on the left side to completely on the right side. The Ka-Bar’s buckle is fixed directly on the right side of the pack (as you wear it). On me, that puts the buckle directly under my kidney. I found that if I loosened the belt so it didn’t dig into my kidney, the pack was too loose and bounced around. The only way to reposition the buckle is to rotate the entire pack. That might work for some people if they wanted the actual compartment on the left or right – basically on their hip. I personally found that didn’t work well when jogging though. The Ka-Bar's fixed buckle is shown below:
3) The Ka-Bar has 2 straps with button snaps on the inner side of the pack. There is a blurb on their site about a clip-on TDI knife clipping to the back of this pack, maybe those button snaps facilitate that. They are large enough to snap onto a normal pants belt, but in a T-shirt and shorts, the snaps are just an irritation.
Here are pics of the snaps on the back of the Ka-Bar:
CostThe Ka-Bar TDI is cheaper than the 5.11 Select Carry Pistol Pouch. While Ka-Bar lists the price of the TDI as $45.54 on their website, the average cost for the Ka-Bar TDI is $34.45 and it can be purchased for $28.72. 5.11 lists their Select Carry Pistol Pouch for $37.99, other outlets sell it for more than that, the average cost for the 5.11 Select Carry Pistol Pouch is $38.72 and the cheapest I could find it for was $34.99
Quality of constructionFor the most part the two packs have the same quality materials and construction. The 5.11 Select Carry Pistol Pouch uses 1050D nylon, Ka-Bar states that they use heavy duty polyester. The stitching on the Ka-Bar TDI is external while the seams and stitching on the 5.11 Select Carry Pistol Pouch are internal.
Overall ImpressionI find myself using the 5.11 Select Carry Pistol Pouch more than the Ka-Bar TDI. I think the comfort and ease of use are the main reasons. I don't use the Ka-Bar for jogging or bicycling at all.
Illinois is unique in that you can have a pistol with you while you're "transporting it. A FOID card holder can legally transport their firearm if it is unloaded and in a "case" or "container". Fanny Packs count as a container if they're closed.
The Ka-Bar might be OK for quick trips down to the store or something until I get my carry license, and then just putting the loaded R9 in the Nemesis holster into a front pocket is going to be how I carry it most of the time.
I'll still use the 5.11 for bicycling and jogging but the R9 will be loaded and holstered when I do that in the future. Here is a pic of the R9 in the Nemesis in the 5.11