I have one of these for my Kahr... well, two. Updated when I went to the WML. They don't list light bearing, but if you email them they tell you how to add custom features, and they do have that. All Glocks including the 42 are listed. I also got it cut for RDS if that is your thing also.
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If unclear, it is a rigid kydex shell bolted to a rigid-lined microfiber padded panel that's up against your body. Mine is just the clip, no wedges and levers, and works well for the tiny gun but since those work well on full sized guns, I'd probably go for it.
I used this for a long time just clipped into drawstring shorts for dog walks, runs (when my body let me run!), limited gym stuff, etc. Comfy and secure even with just the clip. Never had a problem with it at all, suggested.