I certainly wouldn't argue that some people achieve excellent results with the V-gouge. Taylor and Acer are two fine examples. However, having first tried the v-gouge and then being introduced to the stabbing method, I found the latter much more to my liking.
I don't know if I'd live long enough to master the V-gouge and produce as good a result with it, that I can with the stabbing method. As stated previously, and as with any carving tool, the v-gouges must be extremely sharp for best results. The kicker, as far as I'm concerned, is that they are a real pain to get right.
I also find the stabbing method to be more controllable and forgiving for me. In addition to being less prone to a catastrophic slip, or a flat spotted curve, the secondary cut of the stabbing method, used to open up the line allows me to accent a curve or improve a line that may not be exactly what was intended.
I've got a couple v-gouges that almost never leave the rack.
Jeff