I think people are defending the fact that the provari does not have VW because it is 99% useless to them, it's almost a gimmick to anyone but a new vaper or someone brand new to APVs, who has no knowledge at all of resistances / wattage / voltage. It is however, as has been referred to several times just another potential thing that can break down.
I bought my evic in a sale for 3 times less than the provari and it has tons more features and it even has more compatability as it is also ego threaded, but i use it much less since i bought my provari. It's debatable whether the provari is worth 3 times more, but if provape said there is a free updgrade which will equip your provari with VW and a puff counter and all you need to do is take it / send it to your local shop and it will be done in 10mins i wouldnt bother as both are of no use to me.
I respectfully disagree with your thoughts on VW being a "gimmick to anyone but a new vaper" and rather than go into the theory behind it (Ohm's Law and whatnot), I'll just give you a real-world example of how it can be useful.
Example:
Let's say that you are vaping a 2 ohm single coil device at 4 volts and you find this to be a pleasant experience. Your 2 ohm device kicks the bucket, so you switch to a 1.5 ohm single coil device (same tank, same juice, different resistance coil). If you wanted to replicate the pleasant experience you were just having with the 2 ohm single coil device at 4 volts (before it kicked the bucket), you would have to consult Ohm's Law. I've saved everybody the trouble and did the math: you would have to adjust your PV to ~3.46 volts to get the same experience on your 1.5 ohm device as you were getting from the 2 ohm device at 4 volts. Now, you could just "vape to taste" until you get what you believe to be about the same experience (instead of doing the math), but
adjustments must be made nonetheless. Now let's look at the same scenario for a VW user.
Now you are using a VW device. You are vaping a 2 ohm single coil device at 8 watts (the exact equivalent of the single coil 2 ohm at 4 volts). Once again, you then switch to a 1.5 ohm single coil device (same tank, same juice, different resistance coil). Only this time, your device is already set at 8 watts and so it automatically adjusts your voltage output to ~3.46 volts to provide you with the exact same experience you were getting from the 2 ohm device. No math needed. No adjustments needed.
I hope this sheds some light on the usefulness of VW for those who believe it to be useless or gimmicky. It
is useful, and it can be adjusted to taste just like VV. To imply that it is only useful for new vapers is extremely shortsighted; if anything I would say that more advanced vapers have the most to gain from VW as a feature. Now, you can sit there and tell me that none of the VW devices you own perform as well as the Provari. This is fine, in fact it is expected due to the fact that the Provari power delivery system produces a more "DC-like" waveform (read: higher quality) than a cheaper PV. However, it literally takes
nothing away from VW as a useful feature. If Provape implemented VW, I am positive that they would do it to an excellent standard and it would give people a chance to see just how great of a feature it is.
