They have a limited niche, within which they may be priceless. I carried my BUG there for many years in LE, until I got too old and stiff for that to be workable. For those unpleasant circumstances in which someone walked up to the car and I hadn't the necessary S.A. to perceive them and be out of the car ASAP, I could pull up the trouser leg and have a gun in my hand with reasonable discretion. I sometimes still do that when traveling - I wear a laced boot and use the (Galco, I think) ankle holster that laces into the boots laces in addition to the velcro.

I admit I am not generally a fan, but admit that there are times when the ankle rig is the least bad option.

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NHI, 10-8.