Here is another non-firearm posted topic, but in general, I'd suggest the 360 degree polymer type holders. They can be fit with belt loop or paddle styles.
I like the ASP airweight Lever-Lock 21". It's light but still able to work well in less than lethal situations. I also like the glass breaker add-on & the DeSantis Nemnesis pant(BDU type) holder. It has the same sticky material & holds the ASP baton in place.
For ASP prices & styles see these websites:
www.Galls.com www.PoliceHQ.com www.qmuniforms.com www.uscav.com www.Blackhawk.com .
ClydeFrog