The concealco 1 inch holster which costs about $21.0o is perfect for the NovaTac flashlight.
It is inexpensive and highly durable.
They work with the HDS lights and PD's as well.
There are other options available as well like the fine work from fellow CPF'er
qarawol
http://www.cpfmarketplace.com/mp/showthread.php?t=168014
He makes a totally unique system for flashlights which can accodomate a light a multi-tool and a phone. I have one which holds an HDS and a swiss tool.
I have extremely easy access to either tool without looking and with one handed access. If you are a tool freak and want to use your NovaTac as a tool then looking at this mans work is a must.
His prices are higher than the consealco leather but you are possibly buying into a system which you can completely customize to your needs.
It is all about your needs. For some a small nylon pouch will do for others Especially tool users a system such as QARAWOL's is a must.
As far as filters go...The $30 HDS hit is interesting. The kit contains some small circular filters. These can be used as templates for filters which can be made from a FREE filter sample pack from LEE Filters. (google Lee filters) When you receive the filters in the post you can cut small circles of filter's in just about ANY color or shade. If you cut them right you just loosen the bezel carefully remove the "lens" slip in the color filter you want and simply replace the lens back over the filter which is now inside the lens reflector package.
Trust me this system works amazingly well and if you choose not to buy the HDS kit (which is not necessary for the Novatac light,) You just need to be able to cut a perfect 22.5mm round filter from the FREE sample you get.
Anyway it is better than the surefire unit since that is really is just a sort of softening filter.
The LEE filter pack also contains filters of this nature and many others to try.
You can even color correct an emitter with these filters. there is some loss but with the brightness of today's emitters a little loss is not important and you can make the light color of your flashlight as close to perfect as possible.
And it is free.
Try it out.
Yaesumofo
As some of you who read my last post know, I am buying both a gladius and a novatac. Now, I am going down to light hound on Saturday (I too live in the Houston area) to pick up a novatac hopfully. Now what I am going to need is a red lens filter and a belt pouch for it. I was wondering if any of you nova tac people out there had some recomendations for belt pounch that would fit it, and if any of you had any ideas about some red lens filters. Sure fire has a red lens filter, but because of the bezel shape of the nova tac, i am woried that it wont fit.