I have several of the Blackhawk CQC paddle/belt holsters. You might want to reconsider leather for a work/farm holster. If you are going to be outside, exposed to dirt, mud, and the elements, kydex will be better that leather. It will not retain moisture, and if it gets dirty can be easily cleaned with soap and water, then dried with a paper towel. I have heard Safariland also make good kydex paddle holsters with level 2/3 retention. I don't know what mechanism they use to stay put on your belt because I don't own any.
Mr. Tacticaldesire stated;
"In training, it is common for the holster to come along with the gun during a draw. Also, in an entanglement, paddle holsters are known to come off the body or be knocked loose. 3rd, it is not hard to disarm somebody wearing a paddle holster.
While they may be convenient and easy, using them for anything serious is generally ill advised. "
Maybe he is talking about the "cheaper ones". The Blackhawk will not come off your belt unless you un-hook the three little "teeth"(which is not easy). As for being easily disarmed, it is not any easier than with a regular owb or iwb holster without retention features. The Blackhawk has level 2 retention, unless you press the side button, the gun stays in the holster.
I have no stake in any holster company, just wanted to give my 2 cents worth. YMMV.