I have a few comments to add to this discussion. I just found this forum and joined this group for the express purpose of providing some information from an "insiders" perspective. I have been supplying Mag with holsters for 18 years now. The designs and manufacturing were developed by our company over the years. My father and Tony Maglica, the owner of Maglite, were old friends until my father passed away recently.
The XL100 is a big step for Mag, they are trying to get into the tactical field with this light. A bit late and a few features short, but still made with that well-known Mag quality. I personally like the light, I have S/N's 100000002745 and 100000002760. The one Mag gave me to use for prototyping holsters was S/N 100000000006. I have a feeling nobody is going to get lower than that number in the owner's club. Unfortunately, I had to give that one back and buy my own. Pretty tight, huh, they wouldn't even give me one to keep!
Anyway, Mag is an old-school guy, he is in his late 70's and came up in this world as a screw-machine operator and custom tool-and-die guy. Sure, he can afford whatever for web design, and for brochures and literature, but he usually only updates that stuff about once every 5 yrs. What is important to him is product quality and the Made in USA philosophy. He doesn't care too much about having the latest and greatest website, he cares about making product and making money. He is very profit driven. Mag is privately held, he doesn't have to report earnings, but suffice it to say they are in the tens of millions.
So far as holsters go, don't go modifying other people's holsters, be patient and a XL100 holster will come to market soon. I have submitted at least 4 prototypes to them, one a typical tactical holster with open top and bottom, thermoformed laminated foam and ballistic nylon, the next a full pocket with flap ballistic nylon/foam laminate with herringbone binding, that has a grommet in the bottom so you can tell if the light is accidently turned on while holstering it. (This is a problem with this light, my recommendation is to put it in lockout mode before holstering it, but we are developing holsters that you can tell if you turn it on accidently when holstering it) The other two holsters are 1000D cordura, one very similar to the nylon holsters we make for the MMAA, and another with an expanding pocket and open bottom. The problem is, Mag wants a $5 holster for $1, that they can sell for $8, but they're not going to get it. And we make all of Mag's holsters in the USA, in line with their Made In USA policy, so it's difficult to give them a low cost, high quality holster that doesn't cost an arm and a leg. But I'm working on it diligently. I was a little disappointed that there was no loop for a lanyard, but it really doesn't lend itself to this design well, so I understand. Which is fine, I'd rather make holsters for them than wrist lanyards - there's no profit in wrist lanyards and the volumes suck. Not like I expect to sell a million XL100 holsters either. Considering we make between 3 and 5 million webbing holsters per year for the MMAA and the MMAA LED lights, the XL100 will be tiny numbers in comparison. But an XL100 costs $35, while an MMAA with batteries and holster is $8. So go figure, that's why we make so many webbing holsters. But they are free with the light, you can't buy them separately.
Couple more bucks and I would have another XL100... 
