styles/uses for weapon security..
It all depends on a few issues; clothes, lifestyle, speed, security, etc..
If you want a fast high speed draw then go with an open top.
If you plan to wear it concealed but may have it in open carry from time to time or want more security or work/carry weapons near suspects/criminals as part of your job then I'd suggest a well made thumb break/level 2 style rig.
If you may need to run/move quickly while wearing concealed weapons you should get a level 2/secured holster style too. You do not want to jump/climb/run and then watch your $500/600/700.00 pistol fall out and slide down the street...
.
The Blackhawk SERPA design is very popular,
. It's a level 2 style plastic holster that's low cost, secure, long lasting, and conceals well.
www.blackhawk.com
Galco,
www.usgalco.com and Desantis make new secured concealment rigs that have got DHS/ICE(US Homeland Security) contracts. Safariland makes great synthetic holsters/carry gear too;
www.safariland.com .
What ever you pick make sure you also buy a well made/quality belt too,
. Cheap belts will cause problems and may prevent a smooth fast draw in a critical incident.
Rusty