Glock 22 TCM 9R conversion kits

Does anyone have any experience with these conversion kits? Apparently with just a guide rod/spring and barrel swap, you can shoot 22tcm 9r out of your glock 17 or glock 19.

This is particularly fascinating to me because the round has ballistics similar to 5.7x28 without being fuck all expensive.

I'm just curious if the kit is reliable and if this would be suitable for a defensive weapon.