I bought one and have used it several times, especially on smaller pocket knives and an occasional paring knife. The blade heighth on these particular examples don’t lend enough clearance for the stone to clear the vice even with using the Low Angle Adapter (LAA). It does the trick, there are some good YouTube videos on how to properly use it as well, however, it does have one drawback IMO. The rubber strap used to tighten down on the handle leaves plenty of room for angle variation, i.e., when you crank down the the adjustment screw to tighten the band, the more it wants to roll which varies the angle of the blade. So the result is spending quite a bit of time adjusting and readjusting the rubber strap until you gain the angle you want. The videos I’ve seen show that you just place the bar on the table at the same time you’re clamping the knife in place and it should line up perfectly but I haven’t experienced that using my angle guide.
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