I've known "Metropolicity," the proprietor of Skinth Solutions, on EDCForums for some number of years. My transactions with him have all been first rate, highly recommended.

My Wave+ tends to ride in a kydex belt sheath. I seem to recall buying it on eBay and I like it a lot. For the LM bit kit and extender, I've found the CountyComm Zipper Key Pouch (https://countycomm.com/collections/pouches/products/zipper-key-pouch-by-maratac) to be ideal.

I used to run the LM Molle pouch in your link -- that bag was converted to "100% TSA Safe" before the COVID-19 crisis so I don't use it any more. Rugged as all get out, highly recommended for multitool carry. But I'm not sure you'd find enough room for your bit kit.

No affiliation with any of the above.